Annual Information Update

Annual Information Update ("AIU") for the 12 months up to 17 June 2009 1. Introduction Severn Trent Plc (the "Company") published its annual financial statements for the year ended 31 March 2009 on 17 June 2009. This AIU is made in accordance with the requirements of Prospectus Rule 5.2 and not for any other purpose. The information referred to below is not necessarily up-to-date as at the date of this AIU and the Company does not undertake any obligation to update any such information in the future. This AIU contains a list of: * Announcements made via a Regulatory Information Service ("RIS"); * Documents filed with the UK Registrar of Companies; * Documents filed with the Financial Services Authority; and * Documents published and sent to shareholders. The Annual Information Update covers the period from 18 June 2008 up to and including 26 June 2009. The Company is publishing the AIU via an RIS today and making it available on its website at www.severntrent.com 2. Regulatory Announcements The following regulatory announcements have been made by the Company via an RIS during the previous 12 months. Copies of these announcements can be viewed at the London Stock Exchange's website at www.londonstockexchange.com and on the Company's website at www.severntrent.com Date of Publication Regulatory Headline 19/06/2009 Holding(s) in Company 18/06/2009 Block Listing - Interim Review 17/06/2009 Annual Financial Report 15/06/2009 Director/PDMR Shareholding 04/06/2009 Total Voting Rights 29/05/2009 Final Results 20/05/2009 Directorate Change 08/05/2009 Holding(s) in Company 06/05/2009 Holding(s) in Company 05/05/2009 Holding(s) in Company 01/05/2009 Holding(s) in Company 01/05/2009 Director/PDMR Shareholding 01/05/2009 Total Voting Rights 07/04/2009 Severn Trent Water submits Final Business Plan to Ofwat 01/04/2009 Director/PDMR Shareholding 01/04/2009 Total Voting Rights 24/03/2009 Trading Statement 10/03/2009 AMP5 Contractor Appointments 02/03/2009 Total Voting Rights 02/03/2009 Holding(s) in Company 05/02/2009 Holding(s) in Company 02/02/2009 Total Voting Rights 27/01/2009 Interim Management Statement 23/01/2009 Directorate Change 22/01/2009 Publication of Final Terms (STUF Plc) 22/01/2009 Issue of Debt (STUF Plc) 16/01/2009 Circ re Dividend Reinvestment Plan 13/01/2009 Holding(s) in Company 05/01/2009 Director/PDMR Shareholding 02/01/2009 Total Voting Rights 19/12/2008 Publication of Supplementary Prospectus 03/12/2008 Block Listing - Interim Review 02/12/2008 Total Voting Rights 28/11/2008 Holding(s) in Company 28/11/2008 Director/PDMR Shareholding 26/11/2008 Holding(s) in Company 25/11/2008 Half Yearly Report 21/11/2008 Directorate Change 18/11/2008 Holding(s) in Company 03/11/2008 Total Voting Rights 16/10/2008 Holding(s) in Company 10/10/2008 Block Listing Application 01/10/2008 Total Voting Rights 29/09/2008 Director Declaration 23/09/2008 Trading Statement 09/09/2008 Publication of Final Terms 02/09/2008 Total Voting Rights 11/08/2008 Draft Business Plan to Ofwat 08/08/2008 (STUF) Publication of Final Terms 05/08/2008 Statement re Paper on WACC 05/08/2008 Director/PDMR Shareholding 01/08/2008 Total Voting Rights 01/08/2008 Publication of Prospectus 01/08/2008 Statement Re Resolution of Fines 24/07/2008 Holdings in Company 22/07/2008 Interim Management Statement 22/07/2008 AGM Statement 16/07/2008 Publication of Supplementary Prospectus 15/07/2008 Director/PDMR Shareholding 15/07/2008 Director/PDMR Shareholding 02/07/2008 Response to Ofwat Statement 01/07/2008 Total Voting Rights 01/07/2008 Serious Fraud Office 24/06/2008 Director/PDMR Shareholding 23/06/2008 Holdings in Company 20/06/2008 Publication Final Terms 19/06/2008 Publication of Supplementary Prospectus 19/06/2008 Annual Information Update 19/06/2008 Holdings in Company 18/06/2008 Annual Report and Annual General Meeting 3. Documents filed with the Registrar of Companies The following documents have been filed by the Company with the Registrar of Companies at Companies House during the previous 12 months. Copies of these documents may be obtained from: Companies House Crown Way Cardiff CF14 3UZ Tel: (0)303 1234 500 Email:enquiries@companies-house.gov.uk Or, if you are a registered user, through Companies House Direct at www.direct.companieshouse.gov.uk Date Type Description 26/05/2009 88(2) Return of allotment of shares 26/05/2009 88(2) Return of allotment of shares 26/05/2009 88(2) Return of allotment of shares 11/05/2009 88(2) Return of allotment of shares 05/05/2009 88(2) Return of allotment of shares 05/05/2009 88(2) Return of allotment of shares 05/05/2009 88(2) Return of allotment of shares 05/05/2009 88(2) Return of allotment of shares 23/04/2009 363a Annual Return 27/01/2009 288b Resignation of director 20/01/2009 353a Location of Register of Members 09/01/2009 88(2) Return of allotment of shares 31/12/2008 88(2) Return of allotment of shares 31/12/2008 88(2) Return of allotment of shares 31/12/2008 88(2) Return of allotment of shares 23/10/2008 88(2) Return of allotment of shares 23/10/2008 88(2) Return of allotment of shares 14/10/2008 88(2) Return of allotment of shares 18/08/2008 88(2) Return of allotment of shares 18/08/2008 88(2) Return of allotment of shares 05/08/2008 AA Group accounts for y/e 31/03/08 25/07/2008 RES01 Resolutions 25/06/2008 RES13 Resolution 19/06/2008 88(2) Return of allotment of shares 19/06/2008 88(2) Return of allotment of shares 4. Documents filed with the Financial Services Authority and sent to shareholders The following documents have been filed by the Company with the Financial Services Authority and sent to shareholders during the previous 12 months. These documents may be viewed at the UK Listing Authority's Document Viewing Facility at 25 The North Colonnade, Canary Wharf, London E14 5HS. Copies of these documents are also available on request from the Company's registered office at 2297 Coventry Road, Birmingham, B26 3PU. Date Document 17/06/2009 DRIP Letter and Conditions Booklet 17/06/2009 DRIP Application 17/06/2009 Form of Proxy (2009 AGM) 17/06/2009 Notice of Annual General Meeting 2009 17/06/2009 Shareholder Summary 2009 17/06/2009 Severn Trent Plc Annual Report and Accounts 2009 16/01/2009 Circular introduction of Dividend Reinvestment Plan 19/12/2008 Supplementary Prospectus relating to a €4,000,000,000 Euro Medium Term Note Programme 16/07/2008 Supplementary Prospectus relating to a €3,500,000,000 Euro Medium Term Note Programme 19/06/2008 Supplementary Prospectus relating to a €3,500,000,000 Euro Medium Term Note Programme 18/06/2008 Severn Trent Plc Annual Report and Accounts 2008 18/06/2008 Shareholder Summary 2008 18/06/2008 Notice of Annual General Meeting 2008 18/06/2008 Form of Proxy (2008 AGM) 5. Contacts For further information, please contact: Kerry Porritt Deputy Secretary 0121 722 4730

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Severn Trent (SVT)
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