Notice of Results

 Date for Release of first quarter results

Inmarsat announces that Inmarsat plc will issue an interim management statement and Inmarsat Group Limited will release consolidated financial results for the first quarter ended 31 March 2012, on Wednesday, 9 May at 7:00am London time.

Inmarsat management will discuss the first quarter results and other financial and business information in a conference call on Wednesday, 9 May at 2:00pm London time, (United States, 9:00am EST). To access the call please dial +44 (0)20 7162 0025. The conference id for the call is 915852. The call will be recorded and available for one week after the event. To access the recording, please dial +44 (0)20 7031 4064 and enter the access code 915852. The call will also be available via a webcast accessible through our website, www.inmarsat.com.