NATS headquarters at Swanwick; NATS does about 5,300 flights a day - all flights south of Manchester, with 5,000 employees, with around 100 air traffic controllers at Swanwick; the building cost £623m when it opened in 2002, and was five years late, and cost five times as much as the original estimate; it has the National Airspace System written in the 1960s in the JOVIAL language, which is to be replaced in 2016