Transaction in Own Shares

BP PLC
19 May 2006

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

BP p.l.c.  -  19 May 2006



BP p.l.c. announces that on 18 May 2006, it purchased 8,500,000 ordinary shares
at prices between 614.0 pence and 625.0 pence per share. The purchased shares
will all be held as Treasury shares.



BP p.l.c. also announces that on 17May 2006 it transferred to participants in
its employee share schemes 25,629 ordinary shares at prices between 350.00 pence
and 511.00 pence. These shares were previously held as treasury shares.



Following the above transactions, BP p.l.c. holds 1,542,818,535 ordinary shares
in Treasury, and has 20,151,208,098 ordinary shares in issue (excluding Treasury
shares).



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


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