Holding(s) in Company

Form TR-1 with annex. FSA Version 2.1 updated April 2007 For filings with the FSA include the annex For filings with issuer exclude the annex TR-1: Notifications of Major Interests in Shares 1. Identity of the issuer or the underlying Severn Trent issuer of existing shares to which voting rights are attached: 2. Reason for notification (yes/no) An acquisition or disposal of voting rights Yes An acquisition or disposal of financial instruments which may result No in the acquisition of shares already issued to which voting rights are attached An event changing the breakdown of voting rights No Other (please specify):______________ No 3. Full name of person(s) subject to AEGON UK Group of Companies notification obligation: 4. Full name of shareholder(s) (if different from 3): 5. Date of transaction (and date on 25th November 2008 which the threshold is crossed or reached if different): 6. Date on which issuer notified: 26th November 2008 7. Threshold(s) that is/are crossed or 3% reached: 8: Notified Details A: Voting rights attached to shares Class/type of Situation previous Resulting situation after the triggering shares to the triggering transaction transaction If possible use ISIN code Number of Number of Number of Number of voting Percentage of shares voting shares rights voting rights rights Direct Indirect Direct Indirect GB00B1FH8J72 7,079,284 7,079,284 Below 3% Below 3% Below 3% B: Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ No. of voting Percentage of financial date conversion rights that may be voting rights instrument period/date acquired (if the instrument exercised/ converted) Total (A+B) Number of voting rights Percentage of voting rights Below 3% 9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectively held, if applicable: AEGON UK Group of companies - parent undertaking of: AEGON Asset Management UK plc AEGON Investment Management UK ltd. AEGON ICVC Proxy Voting: 10. Name of proxy holder: AEGON UK Group of Companies 11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: 13. Additional information: AEGON UK Group of Companies consists of: AEGON Asset Management UK plc AEGON Investment Management UK ltd AEGON ICVC 14 Contact name: Kerry Porritt 15. Contact telephone name: 0121 722 4730 For notes on how to complete form TR-1 please see the FSA website. Note: Annex should only be submitted to the FSA not the issuer Annex: Notification of major interests in shares A: Identity of the persons or legal entity subject to the notification obligation Full name AEGON Asset Management UK plc (including legal form of legal entities) Contact address AEGON House, (registered office for legal entities) 3 Lochside Avenue, Edinburgh Park, Edinburgh, EH12 9SA Phone number & email 0870 60 90 101 Other useful information Ian G Young, Company secretary, (at least legal representative for 0131 549 6398 legal persons) B: Identity of the notifier, if applicable Full name Miranda Beacham Contact address AEGON House, 3 Lochside Avenue, Edinburgh Park, Edinburgh, EH12 9SA Phone number & email 0131 549 3460 miranda.beacham@aegon.co.uk Other useful information (e.g. functional relationship with the person or legal entity subject to the notification obligation) C: Additional information

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Severn Trent (SVT)
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