Transaction in Own Shares

BP PLC
21 June 2006


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 21 June 2006

BP p.l.c. announces that on 20 June 2006, it purchased 7,300,000 ordinary shares
at prices between 585.5 pence and 602.0 pence per share. The purchased shares
will all be held as Treasury shares.

Following the above transactions, BP p.l.c. holds 1,671,478,127 ordinary shares
in Treasury, and has 20,023,262,366 ordinary shares in issue (excluding Treasury
shares).

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



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