Purchase of Own Securities

BP PLC
21 September 2001

BP p.l.c.  -  Purchase of Own Securities

BP p.l.c.  -  20th September 2001

BP p.l.c. announces that on 20th September 2001, it purchased for cancellation
3,260,500 ordinary shares at prices between 514.50 pence and 539.00 pence
per share and between 757.83 cents and 771.67 cents per share.

Enquiries : Greg Coleman, BP p.l.c.    Tel : [phone]