All jet training in my time, piston engines had been "retired".
I flew the JP3 & 5, followed by Whirlwind 10, Wessex 5 for rotary wing training. 1977-1979.
Wings used to be awarded after the JP course at Linton, 15 course being the last (Sir Douglas Bader presented the flying badges). So many were "chopped" at AFTS at that time I think it became embarrassing to the system. I was 22 course so had to wait until after AFTS anyway.
We were still holding after IOT back then, despite many more aircraft out on the line than these days. So my experience of flying a jet was actually in the Hunter at RAF Honington.