Transaction in Own Shares

BP PLC
15 August 2005


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 15 August 2005

BP p.l.c. announces that on 12 August 2005, it purchased 5,500,000 ordinary
shares at prices between 648.00 pence and 652.50 pence per share. The purchased 
shares will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds 557,485,784 ordinary shares in
Treasury, and has 20,951,712,561 ordinary shares in issue (excluding Treasury
shares).

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



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