Holding(s) in Company

BowLeven Plc 05 February 2007 TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES (1). Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached (ii): Bowleven Plc 2. Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights: ( ) An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached: ( ) An event changing the breakdown of voting rights: ( ) Other (please specify) : ( x ) ................. 3. Full name of person(s) subject to the notification obligation (iii): GSK Common Investment Fund 4. Full name of shareholder(s) (if different from 3.) (iv): ................. 5. Date of the transaction and date on which the threshold is crossed or reached if different) (v): N/A 6. Date on which issuer notified: 5th February 2007 7. Threshold(s) that is/are crossed or reached: Below 3% 8. Notified details: ................. A: Voting rights attached to shares Class/type of shares Situation previous to if possible using the the Triggering ISIN CODE transaction (vi) Number of shares Number of voting Rights (viii) GB00B04PYL99 2,191,011 2,191,011 (3.62%) (3.62%) Resulting situation after the triggering transaction (vii) Class/type of shares Number of shares Number of voting rights % of voting rights if possible using (ix) the ISIN CODE Direct Direct (x) Indirect (xi) Direct Indirect 2,191,011 2,191,011 N/A 2.98% N/A B: Financial Instruments Resulting situation after the triggering transaction (xii) Type of Expiration Date Exercise/Conversion Number of voting % of voting financial (xiii) Period/ Date (xiv) rights that may be rights instrument acquired if the instrument is exercised/ converted. Total (A+B) Number of voting % of voting rights rights 2,191,011 2.98% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable (xv): ................. Proxy Voting: 10. Name of the proxy holder: ................. 11. Number of voting rights proxy holder will cease to hold: ................. 12. Date on which proxy holder will cease to hold voting rights: ................. 13. Additional information: ................. 14. Contact name: ................. 15. Contact telephone number: ................. Annex Notification Of Major Interests In Shares (XVI) A: Identity of the person or legal entity subject to the notification obligation Full name (including legal form for legal entities): GSK Common Investment Fund Contact address (registered office for legal entities): 33 King William Street, London, EC4R 9AS Phone number: 020 7743 2098 Other useful information (at least legal representative for legal persons): Thomas Hone B: Identity of the notifier, if applicable (xvii) Full name: Karen Fraser Contact address: ................. Phone number: 0131 260 5109 Other useful information (e.g. functional relationship with the person or legal entity subject to the notification obligation): ................. C: Additional information : ................. This information is provided by RNS The company news service from the London Stock Exchange

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BowLeven (BLVN)
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