Transaction in Own Shares

BP PLC
15 July 2005


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

BP p.l.c. announces that on 14 July 2005, it purchased 5,000,000 ordinary shares
at prices between 623.00 pence and 627.50 pence per share. The purchased shares
will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds 379,345,724 ordinary shares in
Treasury, and has 21,120,451,651 ordinary shares in issue (excluding Treasury
shares).

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



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