Exhibit 99.4
UNITED UTILITIES PLC – KEY DATES
United Utilities will announce its preliminary results for the year ending 31 March 2005 on Thursday 2 June 2005. In addition, the second stage of the rights issue will commence on 6 June 2005. The key corporate dates for these events are expected to be:
| Announcement of preliminary results for year ending 31 March 2005 | | 2 June 2005 |
| Record date for participation in rights issue | | At close of business on 2 June 2005 |
| Despatch of Provisional Allotment Letters for further A Shares | | 6 June 2005 |
| Dealings commence in further A Shares nil paid | | 7 June 2005 |
| Ex-dividend date for 2004/05 final dividend (A Shares and Ordinary Shares) | | 8 June 2005 |
| Record date for 2004/05 final dividend (A Shares and Ordinary Shares) | | 10 June 2005 |
| Latest date for payment in full of subscription monies for further A Shares | | 29 June 2005 – 10.30am |
| Further A Shares issued | | 30 June 2005 |
| Consolidation and reclassification of all A shares into Ordinary Shares | | At close of business on 6 July 2005 |
| Annual General Meeting | | 29 July 2005 |
| Payment of 2004/05 final dividend to shareholders | | 26 August 2005 |
This announcement does not constitute an offer for sale of any securities or an offer or an invitation to purchase any securities in any jurisdiction. The availability of the rights issue to persons who are not resident in the United Kingdom may be affected by the laws of the relevant jurisdictions in which they are located. This announcement is not an offer of securities for sale in the United States. Securities may not be offered or sold in the United States absent registration with the United States Securities and Exchange Commission or an exemption from registration. There is no intention to register any portion of the further A shares to be offered in the rights issue in the United States or to conduct a public offering in the United States.
| Further information can be obtained from : | | | |
| Tim Rayner, Company Secretary | | +44 1 925 237071 | |
| Simon Bielecki, Investor Relations | | +44 1 925 237033 | |
United Utilities’ Ordinary and A shares trade on the London Stock Exchange and its ADRs, each equal to two Ordinary shares, trade on the New York Stock Exchange under the Trading Symbol “UU”.
