that voluntary redundancies are being sought at its base in the town.The company, which also has an operation in Swanwick, Hampshire, says it expects “several hundred” workers to leave between both sites.However, job losses will be restricted to non-operational staff, with air traffic controllers protected.It follows the loss of almost 500 jobs between GE Caledonian and Spirit Aerosystems in the town.NATS’ Prestwick Centre, which is responsible for 80 per cent of North Atlantic air traffic,