Transaction in Own Shares

BP PLC
16 August 2006

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  16 August 2006

BP p.l.c. announces that on 15 August 2006, it purchased 5,154,000 ordinary
shares at prices between 611.0 pence and 618.0 pence per share. The purchased
shares will all be held as Treasury shares.

Following the above transaction, BP p.l.c. holds 1,931,950,671 ordinary shares
in Treasury, and has 19,767,230,528 ordinary shares in issue (excluding Treasury
shares).

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


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