Transaction in Own Shares

BP PLC
17 May 2007

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

BP p.l.c.  -  17 May 2007



BP p.l.c. announces that on 16 May 2007, it purchased for cancellation 2,712,200
ordinary shares at prices between 555.5 pence and 560.0 pence per share.



BP p.l.c. also announces that on 16 May 2007 it transferred to participants in
its employee share schemes 3,519 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 1,943,897,141 ordinary shares
in Treasury, and has 19,192,279,781 ordinary shares in issue (excluding Treasury
shares).



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


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