MDA Part Of Team To Provide Defence Information Solution To UK MoD

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that on September 13, 2005 BAE Systems Integrated System Technologies Limited announced that its industrial team was chosen by the UK Ministry of Defence to negotiate a contract for the provision of the Maritime Composite Training System for the Royal Navy. (http://www.baesystems.com/newsroom/2005/sep/130905news175.htm).

MDA's role on the team is to provide the classroom trainer for Naval operators of seven different classes of ships. This project will build on the technology solution already provided for the Canadian DND.

About MacDonald, Dettwiler and Associates Ltd. (MDA)

MDA provides advanced information solutions that capture and process vast amounts of data, produce essential information, and improve the decision making and operational performance of business and government organizations worldwide.

Focused on markets and customers with strong repeat business potential, MDA delivers a broad spectrum of earth and space based information solutions, ranging from complex operational systems, to tailored information services, to electronic information products.

MDA employs more than 2,500 people in locations across the United States, Europe, and Canada. The Company's common shares trade on the Toronto Stock Exchange under the symbol TSX:MDA.

Related Websites:
www.mdacorporation.com
www.baesystems.com