Correction announcement regarding Q1 2017 results

Correction to announcement regarding First Quarter Results 2017

Further to RNS 1213E released on 4 May 2017, Inmarsat plc advises that the Q1 2017 "Basic Earnings Per Share" and "Diluted Earnings Per Share" as set out in the Condensed Consolidated Interim Income Statement on page 14 should read as $0.12 and $0.11, respectively, not $0.09 for both, as stated. These figures are correct elsewhere in the announcement and all other figures remain unchanged. The corrected version of the announcement can be found on the Investor Relations section of Inmarsat plc's website: http://investors.inmarsat.com