Trick or treat was never a thing in England. My theory is that it started to get traction after repeated showing of E.T. on TV. As lads we'd go witch hunting on Helloween, hoping to see some naked ladies in the woods. Then we'd walk up to the village green, where there's a witches dip and replica stocks where stocks did once stand. Then we'd visit the graveyard of a church on the green. Folklore had it that if you walked around that church backwards 3 times you'd see the devil, or something like that. It was a fun evening for us and adults didn't seem to mind. A century ago it would've been another matter altogether. Likely we'd have got arrested and punished for that sort of behaviour. But, hey, that's progress.