Annual Information Update

Annual Information Update ("AIU") for the 12 months up to 16 June 2010 1. Introduction Severn Trent Plc (the "Company") published its annual financial statements for the year ended 31 March 2010 on 16 June 2010. 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 27 June 2009 up to and including 09 July 2010. 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 01/07/2010 Total Voting Rights 29/06/2010 Director/PDMR Shareholding 23/06/2010 Director/PDMR Shareholding 16/06/2010 Notice of AGM 15/06/2010 Director/PDMR Shareholding 02/06/2010 Total Voting Rights 28/05/2010 Final results 10/05/2010 Directorate Change 04/05/2010 Block Listing - Interim Review 04/05/2010 Total Voting Rights 04/05/2010 Director/PDMR Shareholding 28/04/2010 Additional Listing 01/04/2010 Total Voting Rights 01/03/2010 Total Voting Rights 04/02/2010 Total Voting Rights 27/01/2010 Director/PDMR Shareholding 26/01/2010 Interim Management Statement 25/01/2010 Directorate Change 19/01/2010 Ofwat's Final Determination for the period 05/01/2010 Director/PDMR Shareholding 04/01/2010 Total Voting Rights 02/12/2009 Holding(s) in Company 01/12/2009 Total Voting Rights 26/11/2009 Ofwat Publishes Final Determination 24/11/2009 Half-Yearly Report 06/11/2009 Block Listing - Interim Review 02/11/2009 Total Voting Rights 01/10/2009 Total Voting Rights 28/09/2009 Director Declaration 01/09/2009 Total Voting Rights 10/08/2009 Holding(s) in Company 10/08/2009 Director/PDMR Shareholding 05/08/2009 Director/PDMR Shareholding 03/08/2009 Total Voting Rights 23/07/2009 Ofwat Publishes Draft Determination 22/07/2009 Publication of Prospectus 22/07/2009 AGM Statement 21/07/2009 Interim Management Statement 08/07/2009 Director/PDMR Shareholding 02/07/2009 Director/PDMR Shareholding 01/07/2009 Total Voting Rights 26/06/2009 Annual Information Update 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 Maindy 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 07/07/2010 SH01 Return of allotment of shares 01/07/2010 SH01 Return of allotment of shares 01/07/2010 SH01 Return of allotment of shares 25/06/2010 SH01 Return of allotment of shares 14/06/2010 AP01 Appointment of director 02/06/2010 SH01 Return of allotment of shares 02/06/2010 SH01 Return of allotment of shares 29/04/2010 AR01 Annual Return 28/04/2010 SH01 Return of allotment of shares 25/03/2010 SH01 Return of allotment of shares 23/02/2010 SH01 Return of allotment of shares 26/01/2010 SH01 Return of allotment of shares 26/01/2010 SH01 Return of allotment of shares 22/01/2010 SH01 Return of allotment of shares 15/12/2009 CH03 Change of secretary's particulars 15/12/2009 CH01 Change of director's particulars 15/12/2009 CH03 Change of secretary's particulars 15/12/2009 CH01 Change of director's particulars 15/12/2009 CH01 Change of director's particulars 15/12/2009 CH01 Change of director's particulars 15/12/2009 CH01 Change of director's particulars 15/12/2009 CH01 Change of director's particulars 15/12/2009 CH01 Change of director's particulars 15/12/2009 CH01 Change of director's particulars 15/12/2009 CH01 Change of director's particulars 15/12/2009 CH01 Change of director's particulars 12/12/2009 SH01 Return of allotment of shares 13/11/2009 SH01 Return of allotment of shares 13/11/2009 SH01 Return of allotment of shares 30/10/2009 SH01 Return of allotment of shares 20/10/2009 AD03 Register(s) moved to SAIL address 20/10/2009 AD02 SAIL address created 19/10/2009 CH03 Change of secretary's particulars 11/09/2009 AA Group accounts for y/e 31/03/09 05/09/2009 Res13 Resolution 27/08/2009 88(2) Return of allotment of shares 27/08/2009 88(2) Return of allotment of shares 14/08/2009 88(2) Return of allotment of shares 06/08/2009 122 Amending Notice of Share Consolidation 24/07/2009 88(2) Return of allotment of shares 24/07/2009 88(2) Return of allotment of shares 24/07/2009 88(2) Return of allotment of shares 16/07/2009 288a Appointment of director 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 16/06/2010 Severn Trent Plc Annual Report and Accounts 2010 16/06/2010 Shareholder Summary 2010 16/06/2010 Notice of Annual General Meeting 2010 16/06/2010 Form of Proxy (2010 AGM), containing the Dividend Reinvestment Plan ("DRIP") application form 16/06/2010 DRIP terms and conditions booklet 22/07/2009 Prospectus relating to a €4,000,000,000 Euro Medium Term Note 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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