According to isitchristmas.com it is not, in fact, Christmas. Nevertheless festive things are happening. We've stocked up with food and drink as if preparing for a restaging of 120 Days of Sodom as an M&S advert, rather than a 12-day festival, for 11 of which the shops will be open. (And we're only at home for some of it.)
I'm a sucker for the Christmas version of anything - I'd probably buy a new Calor Gas fire if it was called a Christmas Calor Gas fire and smelled vaguely of cinnamon.