Transaction in Own Shares

BP PLC
12 January 2006


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 12 January 2006

BP p.l.c. announces that on 11 January 2006, it purchased 4,000,000 ordinary
shares at prices between 635.50 pence and 643.50 pence per share. The purchased
shares will all be held as Treasury shares.

BP p.l.c. also announces that on 11 January 2006 it transferred to participants
in its employee share schemes 49,431 ordinary shares at prices between 350.00
pence and 511.00 pence. These shares were previously held as treasury shares.

Following the above transaction, BP p.l.c. holds 1,006,056,029 ordinary shares
in Treasury, and has 20,634,865,742 ordinary shares in issue (excluding Treasury
shares).

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



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