Transaction in Own Shares

BP PLC
04 August 2005


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 4 August 2005

BP p.l.c. announces that on 3 August 2005, it purchased 9,360,000 ordinary
shares at prices between 632.00 pence and 644.50 pence per share and between
1135.17 cents and 1146.17 cents per share. The purchased shares will all be held
as Treasury shares.

Following the above purchase, BP p.l.c. holds 505,847,724 ordinary shares in
Treasury, and has 20,997,373,469 ordinary shares in issue (excluding Treasury
shares).

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



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