Transaction in Own Shares

BP PLC
18 May 2007

BP p.l.c.  -  Transaction in Own Shares

BP p.l.c.  -  18 May 2007



BP p.l.c. announces that on 17 May 2007, it purchased for cancellation 343,000
ordinary shares at prices between 559.0 pence and 560.0 pence per share.



Following the above transaction, BP p.l.c. holds 1,943,897,141 ordinary shares
in Treasury, and has 19,191,969,931 ordinary shares in issue (excluding Treasury
shares).



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


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