Stocard - All loyalty cards on your smartphone!
Gyft - Buy Digital and eGift Cards | Free Mobile Gift Card App
Key Ring Reward Cards - Tired of all the loyalty cards dangling from your keys or stuffed in your wallet?
Upromise - Upromise is the cashback coupon and rebate site.
CardStar - Leave those bulky plastic “reward cards” and “club cards” at home!
TopCashback - TopCashback names itself the UK’s most generous cashback site. They offer cashback on over 5,000 retailers with a variety of payment methods including gift cards, PayPal and bank transfer.