Transaction in Own Shares

BP PLC
09 May 2006


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 9 May 2006

BP p.l.c. announces that on 8 May 2006, it purchased 9,400,000 ordinary shares
at prices between 675.0 pence and 690.0 pence per share and between 1253.50
cents and 1261.50 cents per share. The purchased shares will all be held as
Treasury shares.

Following the above transactions, BP p.l.c. holds 1,479,532,390 ordinary shares
in Treasury, and has 20,211,969,326 ordinary shares in issue (excluding Treasury
shares).

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



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