LONDON, July 2 /PRNewswire/ --     Inmarsat plc (LSE: ISAT), the leading provider of global
mobile satellite communications services, has completed its previously
announced strategic investment, long term global distribution agreement and
new product development agreement with SkyWave Mobile Communications Inc. of
Ottawa, Canada.

Concurrent with this investment, SkyWave has acquired assets
relating to the GlobalWave satellite low data rate (SLDR) products and
services business from TransCore and entered into a sales distribution
relationship with TransCore focusing on the North American trucking and rail
segments of the SLDR market, designed to leverage TransCore's substantial
presence in those segments.

Inmarsat has acquired 19% in the privately held SkyWave. In
addition, Inmarsat and SkyWave have entered into a direct distribution
agreement for the supply of satellite capacity to SkyWave on a global basis.

Perry Melton, Inmarsat's Chief Operating Officer said, "We are
delighted to have completed on our investment in Skywave. We estimate that
the SLDR market is worth US $600 million today in end user revenue and has
significant growth potential. This investment and partnership with SkyWave
fits our strategic commitment to pursue opportunities that leverage our
satellite network assets."

Global distribution of SkyWave's Inmarsat-based products and
services will be carried out through a network of highly successful and well
established Solution Providers across the world, including TransCore, which
will serve as the channel partner in North America serving the trucking and
rail sectors.

Inmarsat was advised by Morgan Stanley on this transaction.

About Inmarsat

Inmarsat plc (LSE: ISAT) is the leading provider of global mobile
satellite communications. Since 1979, Inmarsat has been providing reliable
voice and high-speed data communications to governments, enterprises and
other organizations, with a range of services that can be used on land, at
sea or in the air. The company's services are delivered through a global
network of more than 500 distribution partners and service providers
operating in 180 countries. For the year ended 31 December 2008, Inmarsat plc
had total revenue of US$ 996.7 million (2007: $576.5 million) with an EBITDA
of US$531.2 million (2007: $388.1 million).

For more information, please visit http://www.inmarsat.com.

About SkyWave Mobile Communications

SkyWave Mobile Communications is a global provider of two-way D+ and
IsatM2M satellite terminals, integrated Satellite/GPRS telematics terminals
and network services based on the global Inmarsat service. SkyWave's products
enable land mobile, marine, oil & gas, government, defence and Supervisory
Control and Data Acquisition (SCADA) applications. With over 160,000 terminal
units shipped globally, Solution Providers trust SkyWave to deliver highly
reliable and cost-effective network services.

For more information, please visit http://www.SkyWave.com.

About TransCore

TransCore's 70-year heritage supporting the transportation industry spans
a range of offerings for the toll, traffic management, airport, parking,
access control, rail, intermodal, trucking, and homeland security markets.
With products and installations in 46 countries, more than 100 patents
worldwide, and pioneering applications of RFID and satellite communications
technologies, TransCore's expertise is unparalleled in the markets it serves.
TransCore has more than 1,700 employees in 80 locations throughout the world.

TransCore operates as a unit of Roper Industries. Roper Industries is a
market-driven, diversified growth company with trailing twelve month revenues
of $2.3 billion, and is a component of the Standard & Poor's S&P Mid-Cap 400,
Fortune 1000, and Russell 1000 Indexes. Roper provides engineered products
and solutions for global niche markets, including water, energy, radio
frequency and research/medical applications. For more information, visit
http://www.transcore.com

Forward-looking Statements

Certain statements in this announcement constitute "forward-looking
statements" within the meaning of the U.S. Private Securities Litigation
Reform Act of 1995. 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.