I have just got back from Asda and all the kids outfits plus halloween paraphenalia is reduced by 75%.
All costumes reduced from £6 to £1.50.
They had skeleton outfits, pumpkin outfits, witch dresses with hats, ghosts all down to £1.50 or less.
Also all decs etc were down to 75% off.
Worth checking out if you live close or have a party later in the week ;)