Honey finds discount codes and provides gold (cashback)
Chrome, Safari, Firefox, or Opera only.joinhoney.com
1400 Gold = £10 gift card and some retailers you can get 1% gold, highest I've had is £12.
Runs in the background and any checkout page you access it automatically adds all discount codes it finds and activates gold where applicable.
Always check Hot UK Deals too. as an example I got a free 2L bottle of pepsi with my Tesco order via Honey and also a pack of Suba noodles via Hot UK Deals. Neither option had both so it works to combine!