Our SNT sergeant, Cliff Elam, has just sent round an electronic version of this poster, see below. Follow this link to get a full size version.
For more information from the Police follow this link.
Elsewhere on the Met website they say:
As a rule if children are old enough to trick or treat on their own, they are too old to do it.
Quite. Although my wife is American I think trick or treating is a naff American import that only started off when we saw ET in the cinema in 1982. Halloween was not marked at all when I was a kid in the 70s.
I will be putting up the poster in my window at the end of the month. After all we don’t want to do anything to encourage obesity do we. Then again maybe if the kids walk around all night and come across enough of these signs they will get the exercise without the sweets so they will have the best of both worlds.