Transaction in Own Shares

BP PLC
16 May 2007

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  16 May 2007


BP p.l.c. announces that on 15 May 2007, it purchased for cancellation 2,700,943
ordinary shares at prices between 557.9 pence and 563.0 pence per share.

Following the above transaction, BP p.l.c. holds 1,943,900,660 ordinary shares
in Treasury, and has 19,194,967,793 ordinary shares in issue (excluding Treasury
shares).


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


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