Transaction in Own Shares

BP PLC
04 May 2006


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 4 May 2006

BP p.l.c. announces that on 3 May 2006, it purchased 9,400,000 ordinary shares
at prices between 679.0 pence and 693.5 pence per share and between 1245.33
cents and 1261.33 cents per share. The purchased shares will all be held as
Treasury shares.

BP p.l.c. also announces that on 3 May 2006 it transferred to participants in
its employee share schemes 715 ordinary shares at prices between 350.00 pence
and 441.00 pence. These shares were previously held as treasury shares.

Following the above transactions, BP p.l.c. holds 1,451,732,390 ordinary shares
in Treasury, and has 20,237,906,575 ordinary shares in issue (excluding Treasury
shares).

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



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