Edeus Now One of MDA's Top Ten Valuation Solution Users in UK

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that its UK subsidiary xit2 is providing Edeus Mortgage Creators Limited with its property valuation management solution. Edeus, owned in part by Merrill Lynch, entered the UK lending market in late 2006 and has already grown to become one of MDA's top ten valuation solution users.

Edeus is using MDA's solution to provide valuation instructions to and receive completed property valuations from its panel manager and panel of chartered surveyors. Edeus selected MDA's valuation solution to streamline its valuation process and improve the time taken to make a binding mortgage offer.

About 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 3,000 people in locations across the United States, the United Kingdom, and Canada. The Company's common shares trade on the Toronto Stock Exchange under the symbol TSX:MDA.

Related Websites:
www.mdacorporation.com
www.edeus.eu/en

Forward-Looking Statement

This release contains forward-looking statements and information, which reflect the current view of MacDonald, Dettwiler and Associates Ltd. with respect to future events and financial performance. Any such forward-looking statements are subject to risks and uncertainties and MDA's actual results of operations could differ materially from historical results or current expectations. Additional information on these and other potential factors that could affect MDA's financial results are detailed in documents filed from time to time with the applicable Canadian securities regulatory authorities.

The Toronto Stock Exchange has neither approved nor disapproved the form or content of this release.