So I have been using Jam Doughnuts for a while now, basically you buy a gift card for whatever you’re buying, you then get a percentage of the gift card as cashback!
I use it for weekly shopping, once I know the total of my shopping I buy the gift card to that value and pay with it - most supermarkets available, once purchased cash is added to your jammy account and can be withdrawn anytime, I have personally made hundreds of pounds back.
Join Jam Doughnuts using my referral code (BGT9) and I can get a small (£5) kick back - you too can refer!
Good luck