Airtime Rewards is a service that offers cashback passively in the form of a discount on your phone bill. Fundamentally, this is the exact same thing as normal cashback. Why phone bills? I don't really know. Still, it works, and the best part is: passive. You do not need to follow any links. All you need to do is link your card and give Airtime permissions and it will be able to see if you've purchased at any retailers it tracks and, if you have, cashback is registered.
Most Airtime cashback deals are within the 1-3% range for the most common retailers, but they will frequently boost the percentages to incentivise purchasing. I've found that "favouriting" the specific retailers you use the most in the Airtime app boosts the likelihood that it will have a boosted cashback rate (known as a "FLASH" deal.)
Currently, Airtime is offering a £2 bonus for the spending of £5 at any retailer. As far as I can tell, it's any retailer that is tracked by Airtime, no specific one. Chances are that you will trigger this at some point if you just link your card and go about your day.
To earn this bonus today, please use my referral code: MCBXJ4DN
Or, alternatively, use this link: https://airtimerewards.app.link/zVBiRcQkI2b