Transaction in Own Shares

BP PLC
10 May 2007

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

BP p.l.c.  -  10 May 2007



BP p.l.c. announces that on 9 May 2007, it purchased for cancellation 3,105,285
ordinary shares at prices between 561.5 pence and 570.0 pence per share.



BP p.l.c. also announces that on 9 May 2007 it transferred to participants in
its employee share schemes 2,991 ordinary shares at prices between 350.0 pence
and 500.0 pence. These shares were previously held as treasury shares.



Following the above transaction, BP p.l.c. holds 1,943,900,660 ordinary shares
in Treasury, and has 19,205,792,650 ordinary shares in issue (excluding Treasury
shares).



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


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