Transaction in Own Shares

BP PLC
13 December 2005


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 13 December 2005

BP p.l.c. announces that on 12 December 2005, it purchased 6,684,000 ordinary
shares at prices between 630.50 pence and 635.50 pence per share. The purchased
shares will all be held as Treasury shares.

Following the above transaction, BP p.l.c. holds 963,314,283 ordinary shares in
Treasury, and has 20,675,468,396 ordinary shares in issue (excluding Treasury
shares).

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



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