Kellogs Just Right cereal at Asda for £2.12. Ok so not as good as previous offers (£1.50) but they appear to be long gone so this is the cheapest I could get it now.
Very nice cereal (IMO) and not too sweet. Personally prefer it with a banana sliced up in the mornings.
PS I have also tried Asda's own brand version, Start Right. It is close (and a lot cheaper, £1.65) but doesn't have quite the same taste. Bit too much fruit and a slightly burnt taste.