Hmm... trying to work out what perspective banjax over there is writing from... Anyways, in the UK, the fillings are: peanut, caramel, Malteser, chocolate, orange fondant, and coffee fondant. Bloody delicious IMO, and perfect if you can't make up your mind what sort of sweet you're after. Although they do tend to be a little on the expensive side for what you get. Someone once mentioned people with nut allergies playing Russian roulette with a bag of Revels. Or possibly not.

Made by Mars Confectionary incidentally.