Total Voting Rights

7 June 2010

Inmarsat plc - Voting Rights and Capital

In conformity with the Transparency Directive's transitional provision 6, we would like to notify the following:

Inmarsat plc's capital today consists of 460,606,780 ordinary shares with voting rights. Inmarsat plc holds no ordinary shares in Treasury.

The above figure 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, Inmarsat plc under the FSA's Disclosure and Transparency Rules.

For further information contact:

Alison Horrocks - 020 7728 1626

Inmarsat plc

Registered in England and Wales. Company No. 4886072

Registered Office: 99 City Road, London EC1Y 1AX