Transaction in Own Shares

BP PLC
19 July 2006


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 19 July 2006

BP p.l.c. announces that on 18 July 2006, it purchased 6,104,000 ordinary shares
at prices between 629.5 pence and 637.0 pence per share and between 1148.33
cents and 1165.17 cents. The purchased shares will all be held as Treasury
shares.

Following the above transaction, BP p.l.c. holds 1,793,457,276 ordinary shares
in Treasury, and has 19,902,516,012 ordinary shares in issue (excluding Treasury
shares).

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



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