Substitution of Yorkshire Water Services Finance plc as issuer of the Bonds originally issued by Kelda Group Limited (formerly, Kelda Group plc)

Yorkshire Water Services Finance plc announces that with effect from and including 3 July 2008, Kelda Group Limited (formerly, Kelda Group plc) has been substituted with Yorkshire Water Services Finance plc as principal debtor under the Bonds (being, the £200 million 6 7/8 per cent. Guaranteed Bonds due 2010 unconditionally and irrevocably guaranteed by Yorkshire Water Services Limited (ISIN: XS0086005971) (the "2010 Bonds"), and £150 million 6.625 per cent. Guaranteed Bonds due 2031 unconditionally and irrevocably guaranteed by Yorkshire Water Services Limited (ISIN: XS0109437441) and £90 million 6.625 per cent. Guaranteed Bonds due 2031 unconditionally and irrevocably guaranteed by Yorkshire Water Services Limited (consolidated and forming a single series with the £150 million 6.625 per cent. Guaranteed Bonds due 2031) (ISIN: XS0109437441) (the "2031 Bonds", and together with the 2010 Bonds, the "Bonds").

The Bonds remain guaranteed by Yorkshire Water Services Limited and the credit ratings of the Bonds are not expected to change as a result of the substitution.

THE ABOVE ANNOUNCEMENT IS A COMMUNICATION TO THE MARKET. NOTHING IN THIS ANNOUNCEMENT CONSTITUTES AN OFFER OF SECURITIES FOR SALE IN THE UNITED STATES OR ANY OTHER JURISDICTION. THIS ANNOUNCEMENT DOES NOT CONSTITUTE A PROSPECTUS OR A PROSPECTUS EQUIVALENT DOCUMENT.

THIS ANNOUNCEMENT HAS BEEN DELIVERED TO YOU ON THE BASIS THAT YOU ARE A PERSON INTO WHOSE POSSESSION THIS ANNOUNCEMENT MAY BE LAWFULLY DELIVERED IN ACCORDANCE WITH THE LAWS OF THE JURISDICTION IN WHICH YOU ARE LOCATED AND YOU MAY NOT, NOR ARE YOU AUTHORISED TO, DELIVER THIS ANNOUNCEMENT TO ANY OTHER PERSON. THE DISTRIBUTION OF THIS ANNOUNCEMENT IN JURISDICTIONS OTHER THAN THE UNITED KINGDOM MAY BE RESTRICTED BY LAW AND THEREFORE PERSONS INTO WHOSE POSSESSION THIS ANNOUNCEMENT COMES SHOULD INFORM THEMSELVES ABOUT, AND OBSERVE, SUCH RESTRICTIONS. ANY FAILURE TO COMPLY WITH THE RESTRICTIONS MAY CONSTITUTE A VIOLATION OF THE SECURITIES LAWS OF ANY SUCH JURISDICTION.