Transaction in Own Shares

BP PLC
18 August 2006


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

BP p.l.c.  -  18 August 2006


BP p.l.c. announces that on 17 August 2006, it purchased 7,845,000 ordinary
shares at prices between 600.5 pence and 609.0 pence per share. The purchased
shares will all be held as Treasury shares.

Following the above transaction, BP p.l.c. holds 1,945,844,185 ordinary shares
in Treasury, and has 19,753,426,014 ordinary shares in issue (excluding Treasury
shares).

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


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