1 July 2008

Centrica plc ('the Company')

Total Voting Rights

In conformity with the Disclosure and Transparency Rules ('the Rules'), we
notify the market of the following:

At the date of this notice, the issued capital of the Company comprises
3,707,858,032 ordinary shares. All of these shares carry voting rights of one
vote per share.

The Company does not currently hold any shares in treasury.

The above figure of 3,707,858,032 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, the Company under the
Rules.

Julia Foo
Centrica plc
01753 494 016

Copyright Business Wire 2008