Inmarsat plc Interim Management Statement

By Inmarsat Ltd, PRNE
Sunday, November 7, 2010

LONDON, November 8, 2010 - Inmarsat plc (LSE: ISAT), the leading provider of global
mobile satellite communications services, today provided the following
information for the three months ended 30 September 2010.

    Inmarsat plc Highlights

    - Total revenue $308.8m up 18.8% (2009: $260.0m)
    - Maritime terminal sales strong and revenues improved
    - AP Moller-Maersk expand commitment to FleetBroadband
    - LightSquared triggers $337.5m agreement to reorganise US

    Inmarsat Group Limited - Q3 Highlights

    - Inmarsat Global MSS revenue $185.1m up 6.2% (2009: $174.3m)
    - Stratos revenue $186.0m up 16.2% (2009: $160.1m)
    - Total EBITDA $189.5m up 18.4% (2009: $160.0m)
    - Profit before tax $105.4m up 37.8% (2009: $76.5m)
    - Free Cash Flow $184.6m up 121% (2009: $83.5m)

Andrew Sukawaty, Inmarsat's Chairman and Chief Executive
Officer, said, "Growth in the third quarter was driven by strong growth in
aeronautical and leasing services and by improved results from maritime, our
largest sector. We are also reporting the first revenue resulting from the
implementation of Phase 1 of our Cooperation Agreement with LightSquared.
With solid revenue growth and tight cost control, our profitability and cash
flow growth remain very healthy. We are on track for a good result for the

Inmarsat plc Revenue

                                               Three months ended   Increase
                                                  30 September         %
    (US$ in millions)                             2010        2009

    Inmarsat Global                              201.2        176.7    13.9%
    Stratos                                      186.0        160.1    16.2%
                                                 387.2        336.8    15.0%
    Intercompany eliminations and adjustments    (78.4)       (76.8)
    Total revenue                                308.8        260.0    18.8%

Inmarsat Global

    Revenue                                   Three months ended   Increase/
                                                 30 September      (decrease)
    (US$ in millions)                            2010        2009

    Maritime sector

    Voice services                               24.5         25.9     (5.4%)
    Data services                                67.1         63.2      6.2%
    Total maritime sector                        91.6         89.1      2.8%
    Land mobile sector

    Voice services                                1.4          1.8    (22.2%)
    Data services                                34.6         37.0     (6.5%)
    Total land mobile sector                     36.0         38.8     (7.2%)
    Aeronautical sector                          27.2         19.7     38.1%
    Leasing                                      30.3         26.7     13.5%
    Total MSS revenue                           185.1        174.3      6.2%
    Other income                                 16.1          2.4    570.8%
    Total revenue                               201.2        176.7     13.9%

Results from our maritime business have improved due to strong
demand for our FleetBroadband service. The number of active maritime
terminals grew by 5.8% and we continue to add FleetBroadband terminals at a
rate of over 2,000 per quarter, significantly ahead of the rate in 2009. Our
expanded agreement with AP Moller-Maersk will also begin to contribute before
the end of the year.

Our land sector results improved sequentially from the second
quarter resulting from higher usage and strong additions for our BGAN
service. Our handheld satellite phone service, IsatPhone Pro, has been
performing well and initial feedback from customers and distributors has been

Growth in aeronautical revenues resulted from sustained demand
from our Swift 64 service and a growing contribution from SwiftBroadband.
Terminal sales for SwiftBroadband were also strong and active aeronautical
terminals overall were up 12.0%. Our leasing business saw continued growth
and we added new leasing business in all sectors during the quarter.

We recorded $9.8m of revenue in other income reflecting
revenue recognised in connection with our Cooperation Agreement with


    Revenue                                   Three months ended
                                                 30 September      Increase
    (US$ in millions)                            2010        2009

    MSS revenue

    Inmarsat MSS                                113.0        109.1     3.6%
    Other MSS                                    30.4         29.0     4.8%
    Total MSS revenue                           143.4        138.1     3.8%
    Broadband (including Segovia)                42.6         22.0    93.6%
    Total revenue                               186.0        160.1    16.2%

In January 2010 we completed the acquisition of Segovia, a
provider of managed communications solutions principally to U.S. government
agencies, and report revenue from this business within our Stratos segment.
Revenue growth in our Stratos Broadband business predominately resulted from
the newly recognised Segovia revenue.


At 30 September 2010, the Inmarsat plc group had net
borrowings of $1,167.3m, made up of cash and cash equivalents of $185.4m and
total borrowings of $1,352.7m. Taking into consideration our cash on hand and
available but undrawn borrowing facilities of $425.7m, the group had total
available liquidity at 30 September 2010 of $611.1m. As a result of deferring
some capital expenditure payments into 2011 our total expenditure for 2010 is
likely to be lower than our previously stated guidance, while total capital
commitments remain unchanged.

Our Financial Reports

Inmarsat Group Limited, our wholly-owned subsidiary, today
also reported unaudited consolidated financial results for the three months
ended 30 September 2010. A copy of the full financial report for Inmarsat
Group Limited can be accessed via the investor relations section of our

Other Information

Other than disclosed in this Interim Management Statement and
the above mentioned report of Inmarsat Group Limited, there have been no
material events or transactions that have taken place in the reporting period
that would affect the results. This Interim Management Statement is required
by the UK Listing Authority's Disclosure and Transparency Rules.

Inmarsat management will discuss the third quarter results and
other financial and business information in a conference call on Monday, 8
November 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
878853. 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
number 878853. The call will also be available via a webcast, to access the
webcast please go to

Forward-looking Statements

Certain statements in this announcement constitute
"forward-looking statements". These forward-looking statements involve risks,
uncertainties and other factors that may cause our actual results,
performance or achievements, or industry results, to be materially different
from those projected in the forward-looking statements. These factors
include: general economic and business conditions; changes in technology;
timing or delay in signing, commencement, implementation and performance of
programmes, or the delivery of products or services under them; structural
change in the satellite industry; relationships with customers; competition;
and ability to attract personnel. You are cautioned not to rely on these
forward-looking statements, which speak only as of the date of this
announcement. We undertake no obligation to update or revise any
forward-looking statement to reflect any change in our expectations or any
change in events, conditions or circumstances.

Contact: Inmarsat, London, UK, Investor Enquiries: Simon Ailes, Tel: +44-20-7728-1518, simon_ailes at; Media Enquiries: Chris McLaughlin, Tel: +44-20-7728-1015, christopher_mclaughlin at

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