Jam Doughnut

Jam Doughnut is an app that gives you cash-back for shopping with top UK brands. All you have to do is buy gift-cards through the app, and they credit your account with cash-back which you can withdraw to your bank.

Brands include: Argos, Asda, Currys, Halfords, Sainsbury's and Morrison's.

Currently they are offering a £3 bonus on your first purchase, and another £8 for every person you invite who goes on to make a withdrawal - so don't forget to come back and submit your code after you've signed up.

Nobody has submitted a code yet. You will have to obtain one elsewhere. Don't forget to come back and be the first to get one in the pool.