Transaction in Own Shares

BP PLC
08 August 2005

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  8 August 2005

BP p.l.c. announces that on 5 August 2005, it purchased 5,730,000 ordinary
shares at prices between 638.00 pence and 639.50 pence per share and between
1126.67 cents and 1138.00 cents per share. The purchased shares will all be held
as Treasury shares.

Following the above purchase, BP p.l.c. holds 520,727,724 ordinary shares in
Treasury, and has 20,983,371,014 ordinary shares in issue (excluding Treasury
shares).

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


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