Transaction in Own Shares

BP PLC
22 March 2007

BP p.l.c.  -  Transaction in Own Shares

BP p.l.c.  -  22 March 2007



BP p.l.c. announces that on 21 March 2007, it purchased for cancellation
4,450,000 ordinary shares at prices between 512.5 pence and 519.0 pence per
share.



BP p.l.c. also announces that on 21 March 2007 it transferred to participants in
its employee share schemes 11,619 ordinary shares at prices between 326.0 pence
and 500.0 pence. These shares were previously held as treasury shares.



Following the above transaction, BP p.l.c. holds 1,943,967,955 ordinary shares
in Treasury, and has 19,302,738,496 ordinary shares in issue (excluding Treasury
shares).



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


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