Transaction in Own Shares

At the Annual General Meeting of the Company held on 29 March 2007 shareholders
granted the company authority to purchase up to 23,385,279 ordinary shares.

The Company announces that it has today repurchased a further 3,750,000
ordinary shares at a price of 148 pence per share. 15,397,593 ordinary shares
have been purchased to date under the above authority and the issued share
capital following cancellation of the shares repurchased will be 140,608,276
ordinary shares.

Since 12 November 1999 when the Company first obtained powers to purchase its
own shares 163,191,843 shares have been repurchased.

21 November 2007