Bletchley
In 1975/1976, the 'Signals Training Establishment' was renamed the 'College of Telecommunications Engineering', with 'Apprentice Technicians' being re-badged as 'Engineer Cadets', no longer passing-out as 'Telecommunications Technicians' but as 'Air Traffic Engineers'.
Read more about this topic: Civil Aviation Authority (United Kingdom), CAA College of Telecommunications Engineering (CTE)