To a very limited extent - when I were a lad, all we did was some jumping off benches and learning to roll/land. Then a bit of swinging in a harness - oh and the spectacularly amusing drag behind a landrover on the airfield at North Luffenham so that we could practise undoing Koch fasteners one handed! Live jumps - certainly not, a chap might get hurt.
As for the main thought behind this thread, I would say that mass personnel jumping is a thing of the past as we just can't afford to maintain a capability which is so unlikely to be used. SF is of course a different matter and would form the cadre from which to regrow the capability if the need arose. Just why the PJIs are RAF and the PTS in Air Cmd I've never really understood.