Spectrum & the ESAP Process ATIF - April 16, 2009 Samer Halawi Vice President, Strategic Corporate Development Inmarsat plc (LSE: ISAT)

2 Content Who we are Not enough spectrum! ATC and ESAP/CGC Monetization of the ESAP process

3 Our markets Dependable global voice & data mobile communications where local networks are unreliable or don’t exist MSS market leader in maritime, land, and aero markets 2008 revenues up 13.4% to $635 million, EBITDA up 12.5% to $432 million (68% EBITDA margin) Fully funded with satellite fleet operational into the 2020s Usage data as at June 2008

4 Not enough spectrum! Exploding demand for broadband wireless services, both 2- way and broadcast Congested network capacity Broadband explosion (smart phones with PC like experience, social networking such as Facebook and Youtube, next generation gaming, mobile broadband applications, bundling and pricing strategies, etc.) Planned technologies hungrier than ever for spectrum Limited spectrum availability and lack of harmonization Due to spectrum and business model uncertainty, incumbent operators slow to invest in new infrastructure

5 Spectrum availability in Europe Bands MHz – Digital dividend TV spectrum / MHz; and / MHz – GSM bands / / MHz – 3G bands / MHz – MSS bands MHz – 3G expansion bands Comments Top 70 MHz targeted for mobile, but no common agreed timetable or strategy Only GSM and UMTS currently allowed in bands, with very complex sharing between legacy and new technologies Already allocated, with little chance to re- purpose l Available, harmonized and auction-free l Best available new band, but no harmonization and auctions expected

6 ATC licensing in North America Efficient use of L-band spectrum (reserved for satellite) Extends terrestrial scope and economics to satellite world Allows for deployment of national hybrid networks Fulfillment of USO obligations Gating requirements Requires spectrum coordination amongst different holders Spectrum coordination agreement between Inmarsat and MSV

7 ESAP process & CGC licensing in Europe Similar to ATC concept 2 free awards of 30 MHz of spectrum each, through ESAP process MSS pan-European license and local CGC model S-band spectrum at 2 GHz is clean and of premium quality Hybrid network, technology agnostic Gating requirements less strict that ATC, with main condition being launch of S-band satellite (€300 million over a period of 3 years)  translates into a cost of less than $0.02 / PMP Several monetization strategies

8 Mobile broadcast - Mobile TV -In-vehicle audio and telematics (SDARS) CGC - 3G/4G 2-way comms - Terrestrial network - Spectrum play Primarily external Revolutionary approach founded on third party collaborations S-band MSS & CGC - Broadcast audio/video services - Mobile telephony/broadband MSS Evolution - BGAN ‘on steroids’ - GSPS evolution B2G - First responders - Security/military - Integrated comms Primarily internal Evolutionary approach founded on Inmarsat’s existing services S-band MSS - 10Mbps downlink speeds to laptop - 500kbps downlink speeds to handheld Monetization of the ESAP process Spectrum play, as preferred business model, or…

9 Conclusion Unique opportunity to acquire 30 MHz of clean premium S-band spectrum across all 27 member states of the EC Entry cost consist of around €300 million payable over 3 years Flexibility to apply several business models, spectrum play model could deliver very health IRR and cash on cash multiple Safety net business model delivers a business worth over $800 million, with a range of options in between Several strategic rationales for potential partners to join Inmarsat on this venture Inmarsat confidential

10 Thank you