Holding(s) in Company

1 May 2008 14:01

Nighthawk Energy plc01 May 2008 TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Identity of the issuer or the underlying issuer of existing shares to whichvoting rights are attached: Nighthawk Energy plc 2. Reason for the notification An acquisition or disposal of voting rights 3. Full name of person(s) subject to the notification obligation: HBOS plc 4. Full name of shareholder(s) (if different from 3): See section 9 5. Date of the transaction (and date on which the threshold is crossed orreached if different): 29 April 2008 6. Date on which issuer notified: 30 April 2008 7. Threshold(s) that is/are crossed or reached: Direct holdings decrease to below 5% 8. Notified details: A: Voting rights attached to shares Class/type of Situation of previous to the Resulting Situation after the triggering transactionshares if Triggering transactionpossible using Number of Number of voting Number of Number of voting rights % of voting rightsISIN code shares rights shares Direct Indirect Direct IndirectGB00B156TD53 10,649,520 10,649,520 5,538,254 5,538,254 3,830,719 2.718% 1.880% B: Financial Instruments Resulting Situation after the triggering transaction Type of Financial Expiration Date Exercise / Conversion Number of Voting rights that % of voting Instrument Period /Date may be acquired if the rights instrument is exercised / converted Total (A + B) Number of Voting Rights % of voting rights 9,368,973 4.597% 9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable Clerical Medical Managed Funds Limited (CMMFL) - (Direct) 4,677,283 (2.295%) Insight Investment Management (Global) Limited* ('IIMGL') - (Indirect) -8,674,259 (4.256%) IIMGL manages holdings on behalf of CMMFL, other HBOS Group companies (which mayalso be held 'Directly') and other third parties external to the HBOS Group,under various discretionary management agreements. (* - wholly owned subsidiaries of HBOS plc.) Proxy Voting: 10. Name of the proxy holder: N/A 11. Number of voting rights proxy holder will cease to hold: N/A 12. Date on which proxy holder will cease to hold voting rights: N/A 13. Additional information: Notification using the total voting rights figure of 203,793,623 14. Contact name: Kenny Melville 15. Contact telephone number: 0131 243 8671 Nighthawk Energy plc 01271 882160David Bramhill Hanson Westhouse Limited 0113 246 2610Tim Feather / Matthew Johnson This information is provided by RNS The company news service from the London Stock Exchange