Although, in America they celebrate Halloween better, than we do over here, but originally halloween is from the Celts over this country, i found an article regarding how and when halloween was first recognised. It's quite interesting really, as i didn't know where halloween first originated. I love that time of the year, and i would love to visit Salem, where they do celebrate well over there.
It never used to be MGirl..it was predominantly an American celebration but over the years...like many good things from America...it has caught on over here so yes it is celebrated in England/Britain but maybe not to the extent it's celebrated in the states!