WePromiseTo Cashback is a brand new UK cashback site. Many cashback sites only pay small amounts of money but this site gives you 100% of the commission they get paid by the company. The way that they make money is that they retain the first £5 that you earn. This means that you do not have to pay anything to them from your pocket and once you have earned more than £5 all of the commission is yours. You even get £1 for each person that you refer once they earn over £5. It sounds well worth joining.