Transaction in Own Shares

BP PLC
17 December 2007

BP p.l.c. -  Transaction in Own Shares
BP p.l.c. -  17 December 2007

BP p.l.c. announces that on 14 December 2007, it purchased for cancellation
2,550,000 ordinary shares at prices between 610.50 pence and 619.50 pence per
share.

Following the above transaction BP p.l.c. holds 1,940,699,703 ordinary shares in
Treasury, and has 18,929,294,238 ordinary shares in issue (excluding Treasury
shares).

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


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