Cheddar cashback site provided £5 referral bonus for new user. Once join it and complete one purchase ( such as supermarket gift card for grocery). You will receive £5 bonus + the cashback of the first purchase.
Once the rewards reach £5, you can transfer the money to your bank.
That means you can get £5 immediately. You can invite your partner, then you will totally get £15.
https://get.cheddar.me/app/EYFVDPV
Use referral code : EYFVDPV