Notice of Results

Date for release of First Quarter 2015 results

Inmarsat plc will report Results for the 3 months ended 31 March 2015 on Wednesday 6th  May at 07.00 hrs GMT (London time).

 Inmarsat management will host a conference call to discuss the results at 08.30 hrs London time. To access the conference call please dial +44(0)20 3427 0503. The access code for the call is 1288566. The call will also be web-cast (listen only) at www.inmarsat.com.

For further information, please contact:

Inmarsat plc

David Boyd  +44 (0)20 7728 1518

[email protected]