Inmarsat to Acquire Ship Equip International AS

LONDON, March 31, 2011 - Inmarsat plc (LSE: ISAT.L), the world's leading provider of global mobile
satellite communications services, today announces the acquisition of Ship
Equip International A.S. ("Ship Equip") for a total consideration of USD
159.5 million. Based in Alesund, Norway, Ship Equip is a leading provider of
VSAT maritime communications services to the shipping, offshore oil & gas and
fishing markets.

James Parm, President and CEO of Stratos, commented: "We are delighted to
welcome Ship Equip and their management team into the Inmarsat group. Ship
Equip is ideally positioned to support the evolution of certain segments of
the maritime market to higher speed services - especially those to be offered
by Inmarsat's revolutionary Global XpressTM programme after its launch in
2013. Ship Equip is the perfect partner for Inmarsat, bringing a large
installed base of maritime VSAT customers, who we expect to be in the
forefront of the transition to Global Xpress services, and a management team
with extensive knowledge of VSAT operations and customers, to help us ensure
that Global Xpress is a compelling proposition for the maritime community.
This acquisition demonstrates our clear determination to prepare the way for
a fast and successful take up of Ka-band services via Inmarsat Global
Xpress."

Ship Equip's expertise in developing and deploying VSAT communications
solutions to key verticals in the maritime market, coupled with its worldwide
committed capacity arrangements and installed base of over 850 vessels (as at
December 2010), have made it a leader in the evolving VSAT maritime
communications market. In 2010 Ship Equip generated revenues of USD 56
million (NOK 312 million).

"We are excited to be joining forces with Inmarsat, and we are convinced
the combination will be the perfect platform for reaching the next level in
satellite broadband maritime services," said Ivar Nesset, CEO of Ship Equip.
"This transaction will enhance Ship Equip's standing as one of the largest
providers of satellite broadband maritime communications solutions and
provide an exciting long-term service proposition for our customers."

Ship Equip is to be acquired by Inmarsat Solutions Limited and will
operate as a separate subsidiary alongside the Stratos and Segovia
businesses. Closing of the transaction is subject to certain regulatory
approvals which are expected to be completed in a matter of weeks. Inmarsat
expects to finance the transaction from current available liquidity.

About Inmarsat

Inmarsat plc (LSE: ISAT) is the leading provider of global
mobile satellite communications services. 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 400 distribution partners and service
providers operating in 100 countries. For the year ended 31 December 2010,
Inmarsat plc had total revenue of US$1,172 million (2009: US$1,038 million)
with an EBITDA of US$696 million (2009: US$594 million). For more
information, please visit www.inmarsat.com.

Chris McLaughlin, Inmarsat, Mob: +44-779-627-6033, Email: chris_mclaughlin at inmarsat.com