Transaction in Own Shares

BP PLC
09 May 2007


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 9 May 2007

BP p.l.c. announces that on 8 May 2007, it purchased for cancellation 3,083,650
ordinary shares at prices between 566.5 pence and 574.0 pence per share.

Following the above transaction, BP p.l.c. holds 1,943,903,651 ordinary shares
in Treasury, and has 19,208,819,145 ordinary shares in issue (excluding Treasury
shares).

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



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