BP p.l.c. - Transaction in Own Shares

BP p.l.c. - 17 July 2008

BP p.l.c. announces that on 16 July 2008, it purchased for cancellation 1,500,000 ordinary shares at prices between 508.00 pence and 528.75 pence per share.

BP p.l.c. also announces that on 16 July 2008 it transferred to participants in its employee share schemes 36,140 ordinary shares at prices between 350.00 pence and 500.00 pence. These shares were previously held as treasury shares.

Following the above transactions BP p.l.c. holds 1,904,969,556 ordinary shares in Treasury, and has 18,790,412,647 ordinary shares in issue (excluding Treasury shares).

Enquiries: Fergus MacLeod, BP p.l.c. Tel: 020 7496 4632

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