3eTI Acquisition Update

2 February 2011

Ultra Electronics Holdings plc

("Ultra" or "the Group")

Ultra completes the acquisition of 3e Technologies International

Ultra announces that it has completed the acquisition, originally announced on 11 January, of 3e Technologies International Inc. ("3eTI") from EF Johnson Technologies Inc. for a cash consideration of $30.0m with an additional amount of up to $1.0m payable by early 2014.

3eTI designs, develops, markets and supports military grade wireless local area network access points, mesh networks, security software, and encryption technologies for military, government and commercial markets. 3eTI's specialist capabilities are critical to the growing market for secure wireless networking and communications 'on the move'. Mesh networking is an adaptive type of networking that 'self configures and self heals'. 3eTI also has an innovative network node that uses encryption to prevent access to a protected network, thereby addressing the need for enhanced cyber security.

3eTI has developed and offers mesh networking and secure communication solutions for:

- critical infrastructure protection

- video surveillance

- shipboard and ship-to-ship communications

- wireless monitoring and process control

3eTI is based in Rockville, Maryland, USA and has 65 employees including a small number of employees working at other locations. 3eTI is highly complementary to the Group's tactical communication market position.

For the year ended 31 December 2009, 3eTI generated revenue of $29.1m. The acquisition of 3eTI was financed using Ultra's existing facilities and is expected to be accretive to 2011 earnings.

- Ends -

Enquiries:

Ultra Electronics Holdings plc 020 8813 4321

Douglas Caster, Chief Executive www.ultra-electronics.com

Rakesh Sharma, Chief Operating Officer

Paul Dean, Group Finance Director

Media enquiries:

Susan Ellis, Senior Communications Adviser 07836 522722

James White, MHP Communications 020 3128 8756

Further information about Ultra:

Ultra Electronics is an internationally successful defence and aerospace company with a long, consistent track record of development and growth. Ultra businesses constantly innovate to create solutions to customer requirements that are different from and better than those of the Group's competitors. The Group has over one hundred distinct market or technology niches within its twenty four businesses. The diversity of niches enables Ultra to contribute to a large number of defence, aerospace and civil platforms and programmes and provides resilience to the Group's financial performance.

Ultra has world-leading positions in many of its niches and, as an independent, non-threatening partner, is able to support all of the main prime contractors with specialist capabilities and solutions. As a result of such positioning, Ultra's systems, equipment or services are often mission-critical to the successful operation of the platform to which they contribute. In turn, this mission-criticality secures Ultra's positions for the long term which underpin the superior financial performance of the Group.

Ultra offers support to its customers through the design, delivery and support phases of a programme. Ultra businesses have a high degree of operational autonomy where the local management teams are empowered to devise and implement competitive strategies that reflect their expertise in their specific niches. The Group has a small head office and executive team that provide to the individual businesses the same agile, responsive support that they provide to customers as well as formulating Ultra's overarching, corporate strategy.