We do have Holloween over here, although it's not as big as in America, but it is moving in that direction. We've also got lots of pagans who call it Samhain, and hang around in Glastonbury and near stone circles.
When I was a kid my mother used to buy a swede (no pumpkins about in those days) and carve it up, and I could bob for an apple floating in a bowl of water. I had to eat it without using my hands. There was never any trick or treating, unlike today when there's a bit.
For me though, it just begins the countdown to 5th November when I can set off a load of fireworks and enjoy a bonfire.