Reconciliations between IFRS and UK GAAP



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Transcription:

Reconciliations between IFRS and UK GAAP

The following reconciliations provide a quantification of the effect of the transition to IFRS. The following seven reconciliations provide details of the impact of the transition on: Income Statement 31 December 2004 Balance Sheet at 31 December 2004 Cash flows 31 December 2004 Income Statement 30 June 2004 Balance Sheet at 30 June 2004 Cash flows 30 June 2004 Balance Sheet at 1 January 2004 The impact of IFRS adoption on the consolidated results and financial position of Premier is addressed separately for each Balance Sheet, the Income Statement and Statement of Cash flows. Notes have been prepared to explain the key changes from UK GAAP to IFRS. The basis of preparation and accounting policies for these statements are the same as given in the Restatement of results under IFRS document issued on 25 August 2005 and available on the Premier Oil plc website.

Income Statement Reconciliation For the year ended 31 December 2004 Notes (a) (b) (c) (d) (e) (f) (g) UK GAAP Numbers in IFRS format Joint venture proportional consolidation Employee benefits Pre licence costs write back writeoff Deferred PRT Exploration cost write-off PKP 2004 IFRS s Amortisation impact $ million $ million $ million $ million $ million $ million $ million $ million $ million Sales and other operating revenues 196.0 55.8 251.8 Gain on sale of investment/fixed assets Sales revenue and other income 196.0 55.8 251.8 Cost of sales (108.4) (20.6) 2.4 (8.0) (134.6) Exploration expense (14.3) 3.9 (23.9) (6.6) (40.9) General and administration costs (15.5) (1.5) (17.0) Share on net income from joint ventures 23.6 (23.6) Operating profit 81.4 11.6 (1.5) 3.9 (23.9) (4.2) (8.0) 59.3 Interest income 1.9 0.1 2.0 Interest, exchange and other finance expense (7.6) (0.2) (7.8) Profit before taxation 75.7 11.5 (1.5) 3.9 (23.9) (4.2) (8.0) 53.5 Taxation (31.9) (11.5) 4.5 2.6 1.3 3.6 (31.4) Profit after taxation 43.8 - (1.5) 3.9 4.5 (21.3) (2.9) (4.4) 22.1 Earnings per share (cents) Basic 53.0 26.8 Diluted 52.1 26.3 Movement in shareholders' equity under IFRS $ million At 31 December 2003 388.8 Adoption of IFRS (please refer to opening balance sheet) (51.3) As restated at 1 January 2004 337.5 Profit for the period 22.1 Currency translation differences (0.4) Restructuring (1.2) Purchase of shares for ESOP trust [note (h)] (3.2) Issue of ordinary shares 5.2 Repurchase of ordinary share capital (5.9) Shareholders' equity at the year end 354.1 Cash flow hedges IAS 39 adoption [note (i)] UNAUDITED (5.4) Shareholders' equity at 1 January 2005 - UNAUDITED 348.7 Year to 31 December 2004 (restated)

Notes (a) Joint ventures proportional consolidation: Joint venture arrangements which involve the establishment of a separate entity in which each venturer has an interest are referred to as jointly controlled entities (JCEs). Under IFRS the Group will report its interests in jointly controlled entities using proportionate consolidation i.e. the Group s share of the assets, liabilities, income and expenses of jointly controlled entities are combined with the equivalent items in the consolidated financial statements on a line-by-line basis. Under UK GAAP the Group accounted for its 50 per cent share in Premier-Kufpec Pakistan BV (PKP) as an interest in a joint venture under FRS 9 Associates and Joint Ventures. FRS 9 required the Group to show its proportion of operating profit or loss, exceptional items, interest, taxation, gross assets and gross liabilities of the joint venture as part of the financial statements. The change to proportional consolidation will result in a major presentational change in the way JCE balances are stated on the face of the income statement. However this will not result in any impact on the net profits of the group. (b) (c) (d) (e) Employee Benefits: The Group has elected to recognise all cumulative actuarial gains and losses as at 31 December 2004 on all of its long term employee benefit schemes including funded pension plan. The impact of this election is a US$(1.5) million additional charge in the income statement. Pre-License costs: IFRS requires that all pre-licence costs are written off in the year that they are incurred. On transition to IFRS all such costs existing at 1 January 2004 were written off to shareholders funds. Some of the costs which remained capitalised at 1 January 2004 under UK GAAP were written off in the UK GAAP 2004 results as the related projects were considered unsuccessful. This reverses the impact of such write offs in the 2004 income statement, as they had already been written off on transition, amounting to $3.9 million. Deferred Petroleum Revenue Tax (PRT): IFRS requires that deferred PRT be calculated on a temporary difference basis, a departure from Premier s former unit of production (UOP) method. This has resulted in a higher provision in the opening IFRS Balance Sheet and a portion ($4.5 million) of the additional provision has been released during 2004 due to the reversal of temporary differences. Exploration Expense: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under full cost method. Under the successful method of accounting, all licence acquisition, exploration and appraisal costs are initially capitalised in well, field or general exploration cost centres as appropriate, pending determination. Expenditure incurred during the various exploration and appraisal phases is then written off unless commercial reserves have been established or the determination process has not been completed. Based on this new policy the Group has written off certain exploration costs incurred in 2004 in Guinea Bissau, Gabon, North Sea and Mauritania related to unsuccessful exploration wells amounting to $23.9 million. (f) Exploration and Evaluation Assets Accounting - PKP Joint venture: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of

accounting for such costs under full cost method. In the PKP joint venture adoption of this policy resulted in a reduced amortisation charge of $2.4 million, additional exploration expense of $6.6 million and a reduction in the taxation charge by $1.3 million. (g) Property plant and equipment - Amortisation: IAS 16 requires that oil and gas property, plant and equipment is generally held in the balance sheet on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately the depreciated historical cost base for the individual fields in the UK and Far East cost pools, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that allow fair values to be adopted on transition in place of depreciated historical cost amounts. The impact of this is an increase to fixed assets of $122.8 million, which has increased the amortisation charge by $8.0 million during 2004 which has been partially offset by a reduction in taxation (deferred tax release) of $3.6 million. (h) Long term incentive plan and Employees Share Option Plan Trust (ESOP) - IFRS 2 requires all the shares purchased for ESOP trusts and provisions made for any future share based pay out to be presented within equity. This has resulted in the movement in shareholders funds during 2004 of $3.2 million due to purchase of further shares for the plan during 2004. (i) Hedging Fair Valuation: The Group elected to apply the IFRS1 exemption from restatement of comparatives for IAS 32 and IAS 39. It applies previous GAAP rules to derivatives, financial assets and financial liabilities and to hedging relationships for the 2004 comparative information. The s required for differences between UK GAAP and IAS 32 and IAS 39 are determined and recognised from 1 January 2005. Group has fair valued its oil & gas options existing at 31 December 2004 and charged Hedging Liabilities to the opening 2005 equity amounting to $5.4 million. These s are not part of the 31 December 2004 IFRS financial information, and are therefore unaudited.

Reconciliation of Equity and Net Assets As at 31 December 2004 UK GAAP numbers in IFRS format (a) Joint venture proportional consolidation (b) Employee benefits (c) Pre licence costs Group (d) Deferred Petroleum Revenue Tax (e) PKP successful (f) Far East successful (g) North West Europe successful (h) Successful write off 2004 (i) IFRS amortisation impact (j) Long term incentive plan and ESOP trust IFRS Balance Sheet 31 Decemnber 2004 $ million $ million $ million $ million $ million $ million $ million $ million $ million $ million $ million $ million Non current assets Exploration and evaluation assets 72.0 (30.6) 41.4 Property, plant and equipment 403.3 121.0 (2.3) (58.8) 72.7 50.0 (12.7) (8.0) 565.2 Investments in associates and joint ventures 94.0 (92.9) 1.1 569.3 28.1 (2.3) (58.8) 72.7 50.0 (43.3) (8.0) 607.7 Current assets Inventories 10.8 1.5 12.3 Trade and other receivables 103.5 16.7 (2.5) (0.2) 117.5 Cash and cash equivalents 56.8 2.8 59.6 171.1 21.0 (2.5) (0.2) 189.4 Total assets 740.4 49.1 (2.5) (2.3) (58.8) 72.7 50.0 (43.3) (8.0) (0.2) 797.1 Current liabilities Trade and other payables (101.7) (10.8) 4.2 0.4 (107.9) Current tax payable (40.6) (40.6) - (142.3) (10.8) 4.2 0.4 (148.5) Non-current liabilities Long term debt (38.8) (38.8) Deferred tax liabilities (90.2) (35.5) (22.2) 21.0 (62.9) (20.0) 2.6 3.6 (203.6) Long term provisions (38.8) (2.8) (41.6) Long term employee benefit plan deficits (10.5) (10.5) (167.8) (38.3) (10.5) (22.2) 21.0 (62.9) (20.0) 2.6 3.6 (294.5) Total liabilities (310.1) (49.1) (6.3) (22.2) 21.0 (62.9) (20.0) 2.6 3.6 0.4 (443.0) Net assets 430.3 - (8.8) (2.3) (22.2) (37.8) 9.8 30.0 (40.7) (4.4) 0.2 354.1 Equity Share capital 74.6 74.6 Share premium account 7.0 7.0 Retained earnings 348.7 (8.8) (2.3) (22.2) (37.8) 9.8 30.0 (40.7) (4.4) 0.2 272.5-430.3 - (8.8) (2.3) (22.2) (37.8) 9.8 30.0 (40.7) (4.4) 0.2 354.1

Notes (a) Joint ventures proportional consolidation: Joint venture arrangements which involve the establishment of a separate entity in which each venture has an interest are referred to as jointly controlled entities (JCEs). Under IFRS the Group will report its interests in jointly controlled entities using proportionate consolidation i.e. the Group s share of the assets, liabilities, income and expenses of jointly controlled entities are combined with the equivalent items in the consolidated financial statements on a line-by-line basis. Under UK GAAP the Group accounted for its 50 per cent share in Premier-Kufpec Pakistan BV (PKP) as an interest in a joint venture under FRS 9 Associates and Joint Ventures. FRS 9 required the Group to show its proportion of operating profit or loss, exceptional items, interest, taxation, gross assets and gross liabilities of the joint venture as part of the financial statements. The change to proportional consolidation will result in a major presentational change in the way JCE balances are stated on the face of the balance sheet. However, this will not result in any impact on the net assets of the group. (b) (c) (d) (e) (f) Employee Benefits: The Group has elected to recognise all cumulative actuarial gains and losses as at 1 January 2004 and the impact of this requirement is a US$(8.8) million reduction to net assets at that date. Additionally under IAS 19 staff costs should reflect services performed during the period including all benefits paid in cash or shares. This has resulted in a transfer to reserves of $1.7 million of deferred shares based bonuses payable in one to three years from the date of the balance sheet offset by a provision for the same amount having no net impact on the shareholders funds. Pre-License costs: IFRS requires that all pre-licence costs are written off in the year that they are incurred. In accordance with the Group s UK GAAP policy, which allowed capitalisation of such costs, US $2.3 million of pre-license costs was capitalised as part of Oil & Gas properties at 31 December 2004. On transition to IFRS, all such costs existing at 31 December 2004 have been written off. Deferred Petroleum Revenue Tax (PRT): IFRS requires that deferred PRT be calculated on a temporary difference basis, a departure from Premier s former unit of production (UOP) method. The impact of this requirement is a US$22.2 million reduction to net assets. This has principally arisen due to PRT on the fair valuation of North West Europe assets as described further in note (g) below. Exploration and Evaluation Assets Accounting - PKP Joint venture: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under full cost method. In the PKP joint venture, adoption of this policy largely required the write off of historic exploration expenditures, pre licence costs and a related to deferred tax due to reduction in the fixed assets in the joint venture. This has resulted in a net asset of $37.8 million. Property plant and equipment - Far East: IFRS requires that fixed assets are held in the balance sheet generally on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately the depreciated historical cost base for the individual fields in the Far East cost pool, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that allow fair values to be adopted on transition in place of depreciated historical cost amounts. The impact of this is a net US$ 9.8 million increase to net

assets, as the Indonesian assets are revalued upwards (US$ 72.7 million) after adjusting for past exploration costs and deferred tax has been provided on the gross fair value, together amounting to $62.9 million. (g) (h) (i) Property plant and equipment - North West Europe: IFRS requires that fixed assets are held in the balance sheet generally on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately the depreciated historical cost base for the individual fields in the North West Europe cost pool, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that will allow fair values to be adopted on transition in place of depreciated historical cost amounts. The impact of this is a net US$ 30.0 million increase to net assets, as the North Sea assets are revalued upwards (US$ 50.0 million) and deferred tax has been provided on the gross fair value, together amounting to $20.0 million. Exploration and Evaluation Assets Accounting: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under full cost method. Based on this new policy the group has written off certain exploration costs incurred in Guinea Bissau, Gabon, North Sea and Mauritania related to unsuccessful exploration wells amounting to $43.3 million with a consequent deferred tax release. Property plant and equipment - Amortisation: IAS 16 requires that fixed assets are held in the balance sheet on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish an accurate cost base for the individual fields in the UK and Far East cost pools, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that will allow fair values to be adopted. The impact of this is an increase to fixed assets of $122.8 million, which has increased amortisation charge by $8.0 million during 2004 which has been partially offset by a reduction in taxation (deferred tax release) of $3.6 million. (j) Long term incentive plan and Employees Share Option Plan Trust (ESOP) - IFRS 2 requires all the shares purchased for ESOP trusts and provisions made for any future share based pay out to be presented within equity. This has resulted in transfer of $0.2 million ESOP trust shares to shareholders funds and a reduction of $0.4 million in long term incentive plan accrual.

Cash flow reconciliation For the year ended 31 December 2004 Notes (a) (b) (c) (d) (e) (f) (g) UK GAAP numbers in IFRS format Cash equivalent transfer PKP joint venture proportional consolidation Employee benefits Pre licence costs Exploration cost written off Joint venture successful Successful amortisation IFRS 31 December 2004 $ million $ million $ million $ million $ million $ million $ million $ million $ million Operating activities Profit before taxation 75.7 11.5 (1.5) 3.9 (23.9) (4.2) (8.0) 53.5 Depreciation, depletion and amortisation 57.4 9.2 (2.4) 8.0 72.2 Exploration expense 14.3 (3.9) 23.9 6.6 40.9 (Increase)/decrease in inventories 0.1 0.3 0.4 (Increase)/decrease in trade and other receivables (7.7) (2.3) (10.0) Increase/(decrease) in trade and other payables 2.5 (2.5) Interest received 2.1 0.1 2.2 Interest receivable (1.9) (0.1) (2.0) Interest paid (2.3) (0.2) (2.5) Interest payable 2.1 0.2 2.3 Other finance income 5.8 5.8 Net operating charge for long term employee benefit plans Less contributions 1.5 1.5 Income taxes paid (53.7) (1.2) (54.9) Impairment and gain or loss on sale of investments/fixed assets 0.2 0.2 Net cash provided by operating activities 94.4 15.2 - - - - - 109.6 Investing activities Capital expenditure (95.6) (8.9) (104.5) Inflow of funds from joint venture 32.2 (32.2) Net cash used in investing activities (63.4) (41.1) (104.5) Financing activities Issue of ordinary shares 5.2 5.2 Repurchase of ordinary shares (3.3) (3.3) Repayment of long term financing (61.2) (61.2) Management of liquid resources 50.7 (50.7) - Net cash used in financing activities (8.6) (50.7) - (59.3) Currency translation differences relating to cash and cash equivalents (0.1) (0.1) (Decrease)/increase in cash and cash equivalents 22.4 (50.8) (25.9) (54.3) Cash and cash equivalents at the beginning of period 5.8 103.3 4.8 113.9 Cash and cash equivalents at the end of period* 28.2 52.5 (21.1) 59.6

Notes (a) (b) Cash equivalents: UK GAAP defines cash flows to include only movements in cash (cash in hand and deposits repayable on demand, less overdrafts). IAS 7 Cash Flow Statements defines cash flows as movements in both cash and cash equivalents, with cash equivalents defined as short-term, highly liquid investments that are readily convertible to known amounts of cash and subject to insignificant risk of changes in value. This presentational difference has no effect on overall net cash position. Joint ventures proportional consolidation: Joint venture arrangements which involve the establishment of a separate entity in which each venturer has an interest are referred to as jointly controlled entities (JCEs). Under IFRS the Group will report its interests in jointly controlled entities using proportionate consolidation i.e. the Group s share of the cash flows of jointly controlled entities are combined with the equivalent items in the consolidated financial statements on a line-by-line basis. Under UK GAAP the Group accounted for its 50 per cent share in Premier-Kufpec Pakistan BV (PKP) as an interest in a joint venture under FRS 9 Associates and Joint Ventures. FRS 9 required the Group to exclude cash flows from joint ventures and only show the amount received from or funding provided to such joint venture. This will result in a major presentational change in the way JCE cash balances are stated on the face of the Cash Flow Statement. The Group will now show net debt numbers including its share of cash and cash equivalents in the PKP joint ventures. (c) (d) (e) (f) Employee Benefits: Premier Oil has elected to recognise all cumulative actuarial gains and losses as at 31 December 2004 on all of its long term employee benefit schemes including funded pension plan. The impact of this election is a US$(1.5) million additional charge in the net profit. However as it a non-cash item it has been added back to the cash flows from operating activities. Pre-License costs: IFRS requires all pre-licence costs to be written off in the year that they are incurred. On transition to IFRS all such costs existing 1 January 2004 were written off to shareholders funds. Some of the costs which remained capitalised at 1 January 2004 under UK GAAP were written off in the 2004 results as the related projects were considered unsuccessful. This reverses the impact of such write offs in the 2004 income statement amounting to $3.9 million. However, as its impact is already reflected in cash flows related to capital expenditure it has been added back to the cash flows from operating activities. Exploration Expense: The group has written off certain exploration costs incurred in 2004 in Guinea Bissau, Gabon, North Sea and Mauritania related to unsuccessful exploration wells amounting to $23.9 million. However as its impact is already reflected in cash flows related to capital expenditure it has been added back to the cash flows from operating activities. Exploration and Evaluation Assets Accounting - PKP Joint venture: The group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under the full cost method. In the PKP joint venture adoption of this policy resulted in a reduced amortisation charge of $2.4 million, and an additional exploration expense of $6.6 million. However as amortisation is a non-cash item and exploration expense is already reflected in cash flows related to capital expenditure both have been adjusted to the cash flows from operating activities.

(g) Property plant and equipment - Amortisation: IAS 16 requires that oil and gas property, plant and equipment is held in the balance sheet generally on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately the depreciated historical cost base for the individual fields in the UK and Far East cost pools, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that will allow fair values to be adopted on transition in place of depreciated historical cost amounts. The impact of this is an increase to fixed assets of $122.8 million, which has increased the amortisation charge by $8.0 million during 2004. However, as it is a non-cash item it has been added back to the cash flows from operating activities.

Income Statement Reconciliation For the period ended 30 June 2004 UK GAAP Numbers in IFRS format (a) (b) (c) (d) (e) Joint venture proportional consolidation Deferred PRT Exploration cost write-off PKP 2004 s Amortisation impact Year to 30 June 2004 $ million $ million $ million $ million $ million $ million $ million Sales and other operating revenues 110.5 26.8 137.3 Gain on sale of investment/fixed assets - - Sales revenue and other income 110.5 26.8 137.3 Cost of sales (56.6) (9.6) 1.0 (2.6) (67.8) Exploration expense (5.1) (17.7) 0.1 (22.7) General and administration costs (6.6) (6.6) Share on net income from joint ventures 10.8 (10.8) - Operating profit 53.0 6.4 (17.7) 1.1 (2.6) 40.2 Interest income 1.5 1.5 Interest, exchange and other finance expense (1.7) (1.7) Profit before taxation 52.8 6.4 (17.7) 1.1 (2.6) 40.0 Taxation (26.4) (6.4) 2.4 2.6 (0.4) 1.0 (27.2) Profit after taxation 26.4-2.4 (15.1) 0.7 (1.6) 12.8 Earnings per share (cents) Basic 32.0 15.5 Diluted 31.3 15.2 Movement in shareholders' equity $ million At 31 December 2003 388.8 Adoption of IFRS (pleas refer opening balance sheet) (51.3) As restated at 1 January 2004 337.5 Profit for the period 12.8 Currency translation differences (5.4) Purchase of shares for ESOP trust 0.2 Issue of ordinary shares 3.8 Shareholders' equity at the period end 348.9 Notes (a) Joint ventures proportional consolidation: Joint venture arrangements which involve the establishment of a separate entity in which each venturer has an interest are referred to as jointly controlled entities (JCEs). Under IFRS the Group will report its interests in jointly controlled entities using proportionate consolidation i.e. the Group s share of the assets, liabilities, income and expenses of jointly controlled entities are combined with the equivalent items in the consolidated financial statements on a line-by-line basis. Under UK GAAP the Group accounted for its 50 per cent share in Premier-Kufpec Pakistan BV (PKP) as an interest in a joint venture under FRS 9 Associates and Joint Ventures. FRS 9 required the Group to show its proportion of operating profit or loss, exceptional items, interest, taxation, gross assets and gross liabilities of the joint venture as part of the financial statements. The change to proportional consolidation will result in a major presentational change in the way JCE balances are stated on the face of the income statement. However this will not result in any impact on the net profits of the group. (b) Deferred Petroleum Revenue Tax (PRT): IFRS requires that deferred PRT be calculated on a temporary difference basis, a departure from Premier s former unit of production (UOP) method. This has resulted in a higher provision in the opening IFRS Balance Sheet and a

portion ($2.4 million) of the additional provision has been released during 2004 due the to reversal of temporary differences. (c) Exploration Expense: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under full cost method. Under the successful method of accounting, all licence acquisition, exploration and appraisal costs are initially capitalised in well, field or general exploration cost centres as appropriate, pending determination. Expenditure incurred during the various exploration and appraisal phases is then written off unless commercial reserves have been established or the determination process has not been completed. Based on this new policy the group has written off certain exploration costs incurred in 2004 in Guinea Bissau and North Sea related to unsuccessful exploration wells amounting to $17.7 million. (d) (e) Exploration and Evaluation Assets Accounting - PKP Joint venture: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under full cost method. In the PKP joint venture adoption of this policy resulted in a reduced amortisation charge of $1.0 million and an additional taxation charge of $0.4 million. Property plant and equipment - Amortisation: IAS 16 requires that oil and gas property, plant and equipment is generally held in the balance sheet on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately and depreciated historical cost base for the individual fields in the UK and Far East cost pools, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that allow fair values to be adopted on transition in place of depreciated historical costs amounts. The impact of this is an increase to fixed assets of $122.8 million, which has increased the amortisation charge by $2.6 million during first half 2004 which has been partially offset by a reduction in taxation (deferred tax release) of $1.1 million.

Reconciliation of Equity and Net Assets As at 30 June 2004 UK GAAP numbers in IFRS format (a) Joint venture proportional consolidation (b) Employee benefits (c) Pre licence costs (d) Deferred Petroleum Revenue Tax (e) PKP successful (f) Far East successful (g) North West Europe successful (h) Successful write off 2004 (i) Amortisation impact (j) Long term incentive plan and ESOP trust IFRS balance sheet 30 June 2004 $ million $ million $ million $ million $ million $ million $ million $ million $ million $ million $ million $ million Non current assets Exploration and evaluation assets 69.9 - (6.2) (30.5) 33.2 Property, plant and equipment 367.1 118.6 (53.3) 72.7 50.0 (6.6) (2.6) 545.9 Investments in associates and joint ventures 99.4 (98.3) 1.1 536.4 20.3 (6.2) (53.3) 72.7 50.0 (37.1) (2.6) 580.2 Current assets Inventories 11.9 2.0 13.9 Trade and other receivables 112.9 13.1 (2.5) (3.0) 120.5 Cash and cash equivalents 60.1 8.0 68.1 184.9 23.1 (2.5) (3.0) 202.5 Total assets 721.3 43.4 (2.5) (6.2) (53.3) 72.7 50.0 (37.1) (2.6) (3.0) 782.7 Current liabilities Trade and other payables (126.4) (8.6) 3.2 6.7 (125.1) Current tax payable (23.3) (23.3) - (149.7) (8.6) 3.2 6.7 (148.4) Non-current liabilities Long term debt (38.6) (38.6) Deferred tax liabilities (98.5) (33.1) (24.2) 19.3 (62.9) (20.0) 2.6 1.1 (215.8) Long term provisions (21.1) (1.7) (22.8) Long term employee benefit plan deficits (8.2) (8.2) (158.2) (34.8) (8.2) (24.2) 19.3 (62.9) (20.0) 2.6 1.1 (285.4) Total liabilities (307.9) (43.4) (5.0) (24.2) 19.3 (62.9) (20.0) 2.6 1.1 6.7 (433.8) Net assets 413.4 - (7.5) (6.2) (24.2) (34.0) 9.8 30.0 (34.5) (1.5) 3.7 348.9 Equity Share capital 74.0 74.0 Share premium account 6.1 6.1 Retained earnings 333.3 (7.5) (6.2) (24.2) (34.0) 9.8 30.0 (34.5) (1.5) 3.7 268.8-413.4 (7.5) (6.2) (24.2) (34.0) 9.8 30.0 (34.5) (1.5) 3.7 348.9

Notes (a) Joint ventures proportional consolidation: Joint venture arrangements which involve the establishment of a separate entity in which each venture has an interest are referred to as jointly controlled entities (JCEs). Under IFRS the Group will report its interests in jointly controlled entities using proportionate consolidation i.e. the Group s share of the assets, liabilities, income and expenses of jointly controlled entities are combined with the equivalent items in the consolidated financial statements on a line-by-line basis. Under UK GAAP the Group accounted for its 50 per cent share in Premier-Kufpec Pakistan BV (PKP) as an interest in a joint venture under FRS 9 Associates and Joint Ventures. FRS 9 required the Group to show its proportion of operating profit or loss, exceptional items, interest, taxation, gross assets and gross liabilities of the joint venture as part of the financial statements. The change to proportional consolidation will result in a major presentational change in the way JCE balances are stated on the face of the balance sheet. However, this will not result in any impact on the net assets of the group. (b) (c) (d) (e) (f) Employee Benefits: The Group has elected to recognise all cumulative actuarial gains and losses as at 1 January 2004 and the impact of this requirement is a US$(7.5) million reduction to net assets at that date. Additionally under IAS 19 staff costs should reflect services performed during the period including all benefits paid in cash or shares. This has resulted in a transfer to reserves of $1.7 million of deferred shares based bonuses payable in one to three years from the date of the balance sheet offset by a provision for the same amount having no net impact on the shareholders funds. Pre-License costs: IFRS requires that all pre-licence costs are written off in the year that they are incurred. In accordance with the Group's UK GAAP policy, which allowed capitalisation of such costs, US $6.2 million of pre-license costs was capitalised as part of Oil & Gas properties at 30 June 2004. On transition to IFRS, all such costs existing at 30 June 2004 have been written off. Deferred Petroleum Revenue Tax (PRT): IFRS requires that deferred PRT be calculated on a temporary difference basis, a departure from Premier s former unit of production (UOP) method. The impact of this requirement is a US$22.2 million reduction to net assets. This has principally arisen due to deferred PRT on the fair valuation of North West Europe assets as described further in note (g) below. Exploration and Evaluation Assets Accounting - PKP Joint venture: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under full cost method. In the PKP joint venture adoption of this policy largely required the write off of historic exploration expenditures, pre licence costs and a related to deferred tax due to reduction in the fixed assets in the joint venture. This has resulted in a net asset of $34.0 million. Property plant and equipment - Far East: IFRS requires that fixed assets are held in the balance sheet generally on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately the depreciated historical cost base for the individual fields in the Far East cost pool, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that allow fair values to be adopted on transition in place of depreciated historical cost amounts. The impact of this is a net US$ 9.8 million increase to net

assets, as the Indonesian assets are revalued upwards (US$ 72.7 million) after adjusting for past exploration costs and deferred tax has been provided on the gross fair value, together amounting to $62.9 million. (g) (h) (i) Property plant and equipment - North West Europe: IFRS requires that fixed assets are held in the balance sheet generally on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately the depreciated historical cost base for the individual fields in the North West Europe cost pool, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that will allow fair values to be adopted on transition in place of depreciated historical cost amounts. The impact of this is a net US$ 30.0 million increase to net assets, as the North Sea assets are revalued upwards (US$ 50.0 million) and deferred tax has been provided on the gross fair value, together amounting to $20.0 million. Exploration and Evaluation Assets Accounting: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under full cost method. Based on this new policy the group has written off certain exploration costs incurred in Guinea Bissau, Gabon, North Sea and Mauritania related to unsuccessful exploration wells amounting to $37.1 million with a consequent deferred tax release. Property plant and equipment - Amortisation: IAS 16 requires that fixed assets are held in the balance sheet on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish an accurate cost base for the individual fields in the UK and Far East cost pools, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that will allow fair values to be adopted. The impact of this is an increase to fixed assets of $122.8 million, which has increased amortisation charge by $2.6 million during the period which has been partially offset by a reduction in taxation (deferred tax release) of $1.1 million. (j) Long term incentive plan and Employees Share Option Plan Trust (ESOP) - IFRS 2 requires all the shares purchased for ESOP trusts and provisions made for any future share based pay out to be presented within equity. This has resulted in transfer of $3.1 million ESOP trust shares to shareholders funds and a reduction of $6.7 million in long term incentive plan accrual.

Cash flow reconciliation For the period ended 30 June 2004 Notes: (a) (b) (c) (d) (e) UK GAAP reformatted under IFRS 30 June 2004 Cash equivalents transfer PKP joint venture proportional consolidation Exploration cost written off Joint venture successful Successful amortisation $ million $ million $ million $ million $ million $ million $ million Operating activities Profit before taxation 52.8 6.4 (17.7) 1.1 (2.6) 40.0 Depreciation, depletion and amortisation 28.2 4.8 (1.0) 2.6 34.6 Exploration expense 5.1 17.7 (0.1) 22.7 (Increase)/decrease in inventories (1.1) (0.2) (1.3) (Increase)/decrease in trade and other receivables (3.8) (3.8) Increase/(decrease) in trade and other payables 5.8 (1.7) 4.1 Interest received 1.6 1.6 Interest receivable (1.5) (1.5) Interest paid (1.3) (1.3) Interest payable 2.5 2.5 Other finance income (2.1) (2.1) Income taxes paid (24.8) (24.8) Net cash provided by operating activities 61.4 9.3 70.7 Investing activities Capital expenditure (57.7) (2.7) (60.4) Inflow of funds from joint venture 14.2 (14.2) Net cash used in investing activities (43.5) (16.9) (60.4) Financing activities Issue of ordinary shares 3.8 3.8 Repurchase of ordinary shares Repayment of long term financing (61.2) (61.2) Management of liquid resources 47.5 (47.5) Net cash used in financing activities (9.9) (47.5) - (57.4) Currency translation differences relating to cash and cash equivalents 1.2 1.2 (Decrease)/increase in cash and cash equivalents 8.0 (46.3) (7.7) (45.9) Cash and cash equivalents at the beginning of period 5.8 103.3 4.8 113.9 Cash and cash equivalents at the end of period 13.8 57.0 (2.9) 68.0 Notes IFRS 30 June 2004 (a) (b) Cash equivalents: UK GAAP defines cash flows to include only movements in cash (cash in hand and deposits repayable on demand, less overdrafts). IAS 7 Cash Flow Statements defines cash flows as movements in both cash and cash equivalents; with cash equivalents defined as short-term, highly liquid investments that are readily convertible to known amounts of cash and subject to insignificant risk of changes in value. This presentational difference has no effect on overall net cash position. Joint ventures proportional consolidation: Joint venture arrangements which involve the establishment of a separate entity in which each venturer has an interest are referred to as jointly controlled entities (JCEs). Under IFRS the Group will report its interests in jointly controlled entities using proportionate consolidation i.e. the Group s share of the cash flows of jointly controlled entities are combined with the equivalent items in the consolidated financial statements on a line-by-line basis. Under UK GAAP the Group accounted for its 50 per cent share in Premier-Kufpec Pakistan BV (PKP) as interests in joint ventures under FRS 9 Associates and Joint Ventures. FRS 9 required the Group to exclude cash flows from joint ventures and only show amount received from or funding provided to such joint venture.

This will result in a major presentational change in the way JCE cash balances are stated on the face of the Cash Flow Statement. The Group will now show net debt numbers including its share of cash and cash equivalents in the PKP joint ventures. (c) (d) (e) Exploration Expense: The group has written off certain exploration costs incurred in 2004 in Guinea Bissau, Gabon, North Sea and Mauritania related to unsuccessful exploration wells amounting to $17.7 million. However as its impact is already reflected in cash flows related to capital expenditure it has been added back to the cash flows from operating activities. Exploration and Evaluation Assets Accounting - PKP Joint venture: The group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under the full cost method. In the PKP joint venture adoption of this policy resulted in a reduced amortisation charge of $1.1 million. However as amortisation is a non-cash item; it been adjusted to the cash flows from operating activities. Property plant and equipment - Amortisation: IAS 16 requires that oil and gas property, plant and equipment is held in the balance sheet generally on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately the depreciated historical cost base for the individual fields in the UK and Far East cost pools, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that will allow fair values to be adopted on transition in place of depreciated historical cost amounts. The impact of this requirement is an increase to fixed assets of $122.8 million, which has increased the amortisation charge by $2.6 million during first half 2004. However, as it is a non-cash item it has been added back to the cash flows from operating activities.

Notes Reconciliation of Equity and Net Assets As at 1 January 2004 (transition date) UK GAAP numbers in IFRS format (a) Joint venture proportional consolidation (b) Employee benefits (c) Pre licence costs (d) Deferred Petroleum Revenue Tax (e) PKP successful (f) Far East successful (g) North West Europe successful (h) Successful write off 2003 (i) Long term incentive plan and ESOP trust Draft IFRS opening balance sheet $ million $ million $ million $ million $ million $ million $ million $ million $ million $ million $ million Net current assets Exploration and evaluation assets 35.8 4.3 (6.2) (19.4) 14.5 Property, plant and equipment 368.2 117.8 (54.6) 72.7 50.0 554.1 Investments in associates and joint ventures 113.1 (101.6) 11.5 517.1 20.5 (6.2) (54.6) 72.7 50.0 (19.4) 580.1 Current assets Inventories 10.9 1.8 12.7 Trade and other receivables 112.9 13.2 (2.5) (4.7) 118.9 Cash and cash equivalents 109.0 4.8 113.8 232.8 19.9 (2.5) (4.7) 245.4 Total assets 749.9 40.4 (2.5) (6.2) (54.6) 72.7 50.0 (19.4) (4.7) 825.5 Current liabilities Trade and other payables (95.1) (10.1) 3.2 8.2 (93.8) Current tax payable (46.6) (46.6) - (141.7) (10.1) 3.2 8.2 (140.4) Non-current liabilities Long term debt (99.5) (99.5) Deferred tax liabilities (102.7) (27.3) (26.6) 19.6 (62.9) (20.0) (219.9) Long term provisions (17.2) (2.9) (20.1) Long term employee benefit plan deficits (8.1) (8.1) (219.4) (30.2) (8.1) (26.6) 19.6 (62.9) (20.0) (347.6) Total liabilities (361.1) (40.4) (4.9) (26.6) 19.6 (62.9) (20.0) 8.2 (488.0) Net assets 388.8 - (7.4) (6.2) (26.6) (35.0) 9.8 (30.0) (19.4) 3.5 337.5 Equity Share capital 73.0 73.0 Share premium account 3.4 3.4 Retained earnings 312.4 (7.4) (6.2) (26.6) (35.0) 9.8 30.0 (19.4) 3.5 261.1-388.8 (7.4) (6.2) (26.6) (35.0) 9.8 30.0 (19.4) 3.5 337.5

Notes (a) Joint ventures proportional consolidation: Joint venture arrangements which involve the establishment of a separate entity in which each venture has an interest are referred to as jointly controlled entities (JCEs). Under IFRS the Group will report its interests in jointly controlled entities using proportionate consolidation i.e. the Group s share of the assets, liabilities, income and expenses of jointly controlled entities are combined with the equivalent items in the consolidated financial statements on a line-by-line basis. Under UK GAAP the Group accounted for its 50 per cent share in Premier-Kufpec Pakistan BV (PKP) as an interest in a joint venture under FRS 9 Associates and Joint Ventures. FRS 9 required the Group to show its proportion of operating profit or loss, exceptional items, interest, taxation, gross assets and gross liabilities of the joint venture as part of the financial statements. The change to proportional consolidation will result in a major presentational change in the way JCE balances are stated on the face of the balance sheet. However this will not result in any impact on the net assets of the Group. (b) (c) (d) (e) (f) Employee Benefits: The Group has elected to recognise all cumulative actuarial gains and losses as at 1 January 2004 and the impact of this requirement is a US$(7.4) million reduction to net assets at that date. Additionally under IAS 19 staff costs should reflect services performed during the period including all benefits paid in cash or shares. This has resulted in a transfer to reserves of $1.7 million of deferred shares based bonuses payable in one to three years from the date of the balance sheet offset by a provision for the same amount having no net impact on the shareholders funds. Pre-License costs: IFRS requires that all pre-licence costs are written off in the year that they are incurred. In accordance with the Group's UK GAAP policy which allowed capitalisation of such costs US$6.2 million of pre-license costs was capitalised as part of Exploration and Evaluation Assets. On transition to IFRS all such costs existing at 1 January 2004 have been written off. Deferred Petroleum Revenue Tax (PRT): IFRS requires that deferred PRT be calculated on a temporary difference basis, a departure from Premier s former unit of production (UOP) method. The impact of this requirement is a US$(26.6) million reduction to net assets. This has principally arisen due to PRT on the fair valuation of North West Europe assets as described further in note (g) below. Exploration and Evaluation Assets Accounting - PKP Joint venture: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under full cost method. In the PKP joint venture adoption of this policy largely required the write off of historic exploration expenditures, pre licence costs and a related to deferred tax due to reduction in the fixed assets in the joint venture. This has resulted in a net asset of $34.9 million. Property plant and equipment - Far East: IFRS requires that fixed assets are held in the balance sheet generally on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately the depreciated historical cost base for the individual fields in the Far East cost pools, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that allow fair values to be adopted on transition in place of depreciated historical cost amounts. The impact of this is a net US$ 9.8 million increase to net assets, as the Indonesian assets

are revalued upwards (US$ 72.7 million) after adjusting for past exploration costs and deferred tax has been provided on the gross fair value, together amounting to $62.9 million. (g) (h) (i) Property plant and equipment - North West Europe: IFRS requires that fixed assets are held in the balance sheet generally on a field by field basis. Given the age and history of the Premier Group it has not been possible to establish accurately the depreciated historical cost base for the individual fields in the North West Europe cost pools, therefore, we have taken the benefit of the transition rules contained within IFRS 1 that will allow fair values to be adopted on transition in place of depreciated historical cost amounts. The impact of this is a net US$30.0 million increase to net assets, as the North Sea assets are revalued upwards (US$50.0 million) and deferred tax has been provided on the gross fair value, together amounting to $20.0 million. Exploration and Evaluation Assets Accounting - West Africa: The Group has adopted an IFRS accounting policy for Exploration and Evaluation Assets that is more aligned with the UK GAAP successful accounting practice rather than its previously adopted policy of accounting for such costs under full cost method. For the West Africa geographic segment adoption of this policy largely required the write off of the historic exploration expenditures related to Guinea Bissau. This has resulted in a net asset reduction of $19.4 million. Long term incentive plan and Employees Share Option Plan Trust (ESOP) - IFRS 2 requires all the shares purchased for ESOP trusts and provisions made for any future share based pay out to be presented within equity. This has resulted in transfer of $4.8 million ESOP trust shares to shareholders funds and a reduction of $8.2 million in long term incentive plan accrual.