Transaction in Own Shares

BP PLC
28 March 2006

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  28 March 2006

BP p.l.c. announces that on 27 March 2006, it purchased 6,922,000 ordinary
shares at prices between 659.00 pence and 670.00 pence per share and between
1151.17 cents and 1157.67 cents per share. The purchased shares will all be held
as Treasury shares.

Following the above transaction, BP p.l.c. holds 1,315,921,564 ordinary shares
in Treasury, and has  20,350,130,534  ordinary shares in issue (excluding
Treasury shares).

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


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