Transaction in Own Shares

BP PLC
13 March 2007


BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  13 March 2007


BP p.l.c. announces that on 12 March 2007, it purchased for cancellation
3,900,000 ordinary shares at prices between 521.5 pence and 526.0 pence per
share.

Following the above transaction, BP p.l.c. holds 1,944,019,016 ordinary shares
in Treasury, and has 19,328,280,475 ordinary shares in issue (excluding Treasury
shares).

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


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