It's the tesco "American style diet coke" there regular one uses aspartame .
I can't remember how much they cost, wouldn't of been much tho as I'm a bit of a stingy shopper! Lol! They have a chocolate coating. Havnt tried them yet tho as they are going to be my treat for completing induction!
I have just discovered there is a diabetic shop in my town aswell that sells all sorts of sugar free treats. I live in a tiny town and never new it was there!