I always thought it ironic (and of course, rather sad!) that they didn't really celebrate Halloween in the UK. I think of it as such a "Celtic" and pagan holiday, originating in Scotland and environs, that it seemed strange that it was only a popular holiday in America.
I think in recent years, largely due to American influence, it is trickling back into the UK. I bought these today - I couldn't resist! Only I have no idea what "cinder" toffee is!