Transaction in Own Shares

BP PLC
01 February 2007


BP p.l.c. - Transaction in Own Shares
BP p.l.c. - 1 February 2007

BP p.l.c. announces that on 31 January 2007, it purchased for cancellation
6,000,000 ordinary shares at prices between 534.0 pence and 541.0 pence per
share.

BP p.l.c. also announces that on 31 January 2007 it transferred to participants
in its employee share schemes 72,115 ordinary shares at prices between 326.0
pence and 511.0 pence. These shares were previously held as treasury shares.

Following the above transaction, BP p.l.c. holds 1,946,190,792 ordinary shares
in Treasury, and has 19,439,730,784 ordinary shares in issue (excluding Treasury
shares).

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



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