Transaction in Own Shares

BP PLC
31 January 2008


BP p.l.c. -  Transaction in Own Shares
BP p.l.c. -  31 January 2008


BP p.l.c. announces that on 30 January 2008, it purchased for cancellation
1,650,000 ordinary shares at prices between 522.00 pence and 534.00 pence per
share.

BP p.l.c. also announces that on 30 January 2008 it transferred to participants
in its employee share schemes 21,356 ordinary shares at prices between 350.00
pence and 452.00 pence. These shares were previously held as treasury shares.

Following the above transactions BP p.l.c. holds 1,939,889,689 ordinary shares
in Treasury, and has 18,888,401,569 ordinary shares in issue (excluding Treasury
shares).

The RNS announcement, number 8103M, issued by BP p.l.c. at 07:00 on 30 January
2008, contained an error in the number of ordinary shares in issue. It  reported
the number of ordinary shares in issue (excluding Treasury shares) as
18,923,939,199. The correct number of ordinary shares in issue (excluding
Treasury shares) at the time of announcement was 18,889,998,277.


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


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