Transaction in Own Shares

BP PLC
14 May 2007

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  14 May 2007

BP p.l.c. announces that on 11 May 2007, it purchased for cancellation 3,072,398
ordinary shares at prices between 549.5 pence and 560.0 pence per share.

Following the above transaction, BP p.l.c. holds 1,943,900,660 ordinary shares
in Treasury, and has 19,200,210,256 ordinary shares in issue (excluding Treasury
shares).

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


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