Notice of Results

Date for release of 2016 Interim Results

Inmarsat plc will report results for the 6 months ended 30 June 2016 on Thursday 4 August at

07.00 hrs BST (London time).

Inmarsat management will host a presentation of the results on Thursday 4 August at Inmarsat plc offices, 99 City Road, London EC1Y 1AX. The presentation will begin at 09.00 hrs BST (London time).

A live webcast of the presentation will be available through our website

http://edge.media-server.com/m/p/na7dz984 and via a simultaneous conference call: +44 (0) 20 3427 1914; for US: +1877 280 1254, access Code 9179472.

To register to attend the results presentation in person, please contact Andi Marcz on [email protected]. Registration at the event itself will begin at 08.30 hrs on Thursday, 4 August.

For further information please contact:

Andi Marcz ; +44 20 7728 1206

[email protected]

Morten Singleton +44 20 7728 1518

[email protected]