The training more than likely hasn't changed in 40 years..
Regrettably it has. Like every other aspect of RAF training, it has been progressively eroded by yes-men eager for promotion.....
At CATCS Shawbury, simulator training was once combined with 'live' training. Civil pilots under contract would flog around the sky in whichever species of trainer the RAF had just finished using - Provost T1, then Vampire T11, then Jet Provost T3 / T4. It was also a good opportunity for trainee holding pilots to sandbag in aircraft they'd never get the chance to fly otherwise. But sadly all that finished in 1989, since which time live flying training has been absent from the course. All training is now done in simulators - even 'visual' controlling.
Nevertheless, the so-called 'busy' military ATCO should visit somewhere like Wellsesbourne Mountford on a summer weekend to see how the civil world manages to cope without over controlling 'amateur' GA pilots.