Wren - Offset your carbon footprint by saving rainforests
KOHO - KOHO is a place where you can access your money in real-time and get instant cashback.
YAYZY - Track the carbon footprint of each purchase in real-time
Paribus - Find out for free if online stores owe you a refund!
Treepoints - Fight climate change and earn rewards
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.