Sounds as if ACP are strict about cycles being cycles whereas AUK are more relaxed.It was about 25 years ago and it was a place-to-place (not a circuit) populaire that started quite a bit higher than it finished. It also had an element of rough off-road so a bit of running with the skateboard under the arm was involved.Electrically assisted bikes are only allowed on BPs not BRs, aren't they? Or maybe they're allowed to enter BRs too but don't get validated or something?
More notably PBP has been ridden, and with a good time, on a kick-scooter. I think that has subsequently been outlawed by ACP.
AUK current regs:Quote9.3 Any kind of cycle may be ridden, with the following conditions:
9.3.1 The cycle is propelled solely by human effort. ...
(Despite this, AUK seem to be relaxed about participants on electrically-assisted bikes)
E-bike riders are allowed to enter BPs but are not eligible for validation. E-bikers aren't allowed to enter BRs.