Wikipedia
Quidco is a cashback website based in the UK, with offices in Sheffield and London. The site takes the commission (termed "cashback") usually paid by retailers to third-party referrers and passes it on to Quidco members.
There are two tiers of membership: Basic and Premium members. The service is free for Basic members. Premium members have their first £5 cashback retained to qualify for enhanced levels of customer service and a range of offers from faster paying retailers.
As well as online cashback offers, Quidco provides its members with a range of deals that can be redeemed when shopping on the highstreet. Members just add their 16-digit card numbers from debit and credit cards to register, then shop as normal to receive cashback rates on in-store purchases.
In November 2012, Quidco became the first UK company to offer cashback on grocery shopping. Quidco ClickSnap offers shoppers a wide range of supermarket cashback deals on household items – both online and in-store – in a variety of top UK retailers, including Sainsbury's, Tesco, Morrisons and Waitrose.