The extension was given by NATS, Britain's leading air traffic control company, and will specifically support NATS' air traffic management systems at control centers in Swanwick and Prestwick.
Services provided include systems architecture and engineering, software development, laboratory support and systems integration, as well as flight data processing.
"Lockheed Martin plays an integral role at NATS," said Martin Rolfe, NATS managing director of operations. "Our controllers are looking after aircraft in some of the busiest and most complex airspace anywhere in the world, so they need systems they can rely on."
"We're proud to continue collaborating with and supporting NATS," said Sandy Samuel, vice president, Lockheed Martin Transportation Solutions. "Extending our agreement with NATS is a sign of our partnership's strength and a demonstration of Lockheed Martin's sustained commitment to air traffic management innovation."