Free Blind Pig Whiskey, Honey and Apple Cider
Download the free Shopmium app if you don't have it already.
Sign up, using my referral code, "KYFEYMAM" to receive an extra, free bar of Lindt Extra Creamy Milk Chocolate (I hope that's allowed).
Buy the cider in 355ml at Asda.
When you get home, snap the receipt, and the full amount will be refunded, usually the next day.