Transaction in Own Shares

BP PLC
31 May 2006

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

BP p.l.c.  -  31 May 2006



BP p.l.c. announces that on 30 May 2006, it purchased 5,025,000 ordinary shares
at prices between 625.50 pence and 639.50 pence per share. The purchased shares
will all be held as Treasury shares.



Following the above transactions, BP p.l.c. holds 1,579,249,382 ordinary shares
in Treasury, and has 20,115,090,783 ordinary shares in issue (excluding Treasury
shares).



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


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