Result of EGM

Results of EGM regarding the Demerger of Biffa Plc and the Share Consolidation 
                        of Severn Trent Ordinary Shares                        

Severn Trent Plc (the "Company") announces that, at the Extraordinary General
Meeting of the Company held earlier today to approve, among other things, the
Demerger of Biffa Plc and the Share Consolidation of Severn Trent Ordinary
Shares, each of the ordinary and special resolutions put to the Shareholders
was duly passed.

Proxy appointments were validly made in respect of 160,427,720 Existing Severn
Trent Ordinary Shares; being 45.9 per cent. of the issued share capital of
349,531,239 Existing Severn Trent Ordinary Shares. All the resolutions were
passed at the meeting on a show of hands however, a summary of the proxy votes
received by the Company prior to the meeting were as follows:

Resolution            Votes for and    Votes against         Votes withheld    
                      Discretion                                               
                                                                               
1. To pay the         159,094,919      300,575               1,032,226         
Demerger Dividend                                                              
                                                                               
2. To approve the     159,039,329      356,330               1,032,061         
Share Consolidation                                                            
                                                                               
3. To approve the     153,860,093      3,494,173             3,073,454         
operation of the                                                               
Biffa Long Term                                                                
Incentive Plan                                                                 
                                                                               
4. To approve the     158,286,131      743,054               1,398,535         
operation of the                                                               
Biffa Sharesave                                                                
Scheme                                                                         
                                                                               
5. To approve the     158,509,028      518,884               1,399,808         
operation of the                                                               
Biffa Share Incentive                                                          
Plan                                                                           
                                                                               
6. To authorise the   157,863,013      1,326,986             1,237,721         
Directors to allot                                                             
shares                                                                         
                                                                               
7. To disapply        158,489,958      468,595               1,469,167         
pre-emption rights *                                                           
                                                                               
8. To authorise the   158,836,248      357,334               1,234,138         
Company to purchase                                                            
its own shares *                                                               

* Denotes special resolution.

Copies of the resolutions will shortly be available for inspection at the UKLA
Document Viewing Facility situated at: Financial Services Authority, 25 The
North Colonnade, Canary Wharf, London E14 5HS.

Applications have been made to the FSA and the London Stock Exchange for the
Biffa Ordinary Shares and the New Severn Trent Ordinary Shares to be admitted
to listing on the Official List and to trading on the London Stock Exchange's
main market for listed securities ("Admission").

Subject to Admission, which is expected to become effective at 8.00am on Monday
9 October 2006, Severn Trent Shareholders on the register of members at 6.00pm
on 6 October 2006 (the Record Time) will receive 1 Biffa Ordinary Share for
every Existing Severn Trent Ordinary Share held at that time and, 2 New Severn
Trent Ordinary Shares in place of every 3 Existing Severn Trent Ordinary
Shares.

Definitions used in the Circular to Severn Trent Shareholders dated 13
September 2006 shall have the same meanings when used in this announcement,
unless defined in this announcement or unless the context requires otherwise.

Severn Trent announcements are available on www.severntrent.com.

Enquiries:

Peter Gavan
Director of Corporate Affairs 07901 517447

Jonathan Davies
Head of Investor Relations 0121 722 4295

David Trenchard
Tulchan Communications Group 020 7353 4200

This announcement does not constitute an offer of, or the solicitation of an
offer to buy or subscribe for, or to sell, exchange or transfer any securities
in any jurisdiction. Securities may not be offered, sold or transferred in the
United States absent registration or an applicable exemption from the
registration requirements of the US Securities Act of 1933, as amended (the
"Securities Act").

END

www.severntrent.com