Further re Demerger Announcment

Posting of Severn Trent Circular and Publication of Biffa Prospectus      

Following the announcement regarding the proposed Demerger of Biffa, Special
Dividend, Share Consolidation and Base Dividend earlier today, Severn Trent
announces that:

  * the Circular dated 13 September 2006 containing recommended proposals in
    connection with the proposed Demerger of Biffa Plc and Notice of the
    Extraordinary General Meeting (the "EGM") to be held on 6 October 2006 at
    2.30 p.m. at the National Motorcycle Museum, Coventry Road, Bickenhill,
    Solihull, B92 0EJ is now available for viewing on the Severn Trent website
    (www.severntrent.com) and will be posted to shareholders shortly; and
   
  * the Biffa Prospectus relating to the admission to the Official List and to
    trading on the London Stock Exchange of up to 352,323,256 ordinary shares
    of 10 pence each is now available free of charge at the registered office
    of Biffa Plc, Coronation Road, Cressex, High Wycombe, Buckinghamshire, HP12
    3TZ and is expected to be available for viewing on the Biffa Plc website
    (www.biffa.co.uk) shortly and on www.ir.biffa.co.uk.
   
Copies of the Circular, accompanying Proxy Form and the Biffa Prospectus are
now available for public inspection at the United Kingdom Listing Authority's
Document Viewing Facility, situated at the Financial Services Authority, 25 The
North Colonnade, Canary Wharf, London E14 5HS.

The Circular and Proxy Form will also be available for inspection at the
registered office of Severn Trent Plc, 2297 Coventry Road, Birmingham, B26 3PU,
and at the offices of Herbert Smith LLP, Exchange House, Primrose Street,
London EC2A 2HS during normal business hours on Monday to Friday each week
(public holidays excepted) for a period from and including the date of this
announcement up to and including the date of the EGM and at the National
Motorcycle Museum, Coventry Road, Bickenhill, Solihull, B92 0EJ for a period of
at least 15 minutes prior to the EGM and during the EGM.

Copies of the Biffa Prospectus are also available for inspection at the offices
of Herbert Smith LLP, Exchange House, Primrose Street, London EC2A 2HS during
normal business hours on Monday to Friday each week (public holidays excepted)
for a period from and including the date of this announcement until the date of
Admission.

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").

The shares in Biffa proposed to be distributed in connection with the Demerger
have not been, and will not be, registered under the Securities Act nor have
they been approved or disapproved by the U.S. Securities and Exchange
Commission (the "SEC") or any U.S. state securities commission and neither the
SEC nor any U.S. state securities commission passed upon the accuracy or
adequacy of this announcement. Any representation to the contrary is a criminal
offence in the U.S.