Total Voting Rights

Severn Trent Plc (the "Company") - Voting Rights and Capital

In accordance with Disclosure and Transparency Rule 5.6.1, the Company would like to notify the market of the following:

As at 1 December 2011, the Company's issued share capital consists of 237,584,026 ordinary shares of 9717/19pence each with voting rights. The Company holds no shares in Treasury. Therefore, the total number of voting rights in Severn Trent Plc is 237,584,026.

The above figure of 237,584,026 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, Severn Trent Plc under the FSA's Disclosure and Transparency Rules.

www.severntrent.com