Transaction in Own Shares

BP PLC
23 October 2007

BP p.l.c. -  Transaction in Own Shares
BP p.l.c. -  23 October 2007

BP p.l.c. announces that on 22 October 2007, it purchased for cancellation
4,600,000 ordinary shares at prices between 602.0 pence and 609.5 pence per
share.

Following the above transaction BP p.l.c. holds 1,941,569,882 ordinary shares in
Treasury, and has 19,000,911,982 ordinary shares in issue (excluding Treasury
shares).

Enquiries: Fergus MacLeod, BP p.l.c.    Tel: [phone]


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