Transaction in Own Shares

BP PLC
05 July 2005


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 5 July 2005

BP p.l.c. announces that on 4 July 2005, it purchased 3,370,919 ordinary shares
at prices between 600.00 pence and 615.00 pence per share. The purchased shares
will all be held as Treasury shares.

Following the above purchase, BP p.l.c. holds 324,863,919 ordinary shares in
Treasury, and has 21,169,011,090 ordinary shares in issue (excluding Treasury
shares).

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



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