!!THIS OFFER HAS NOW ENDED!!
If you are a member of Airtime Rewards, there is a little secret promo code "CARD" which if you head to the promo code section and add it, £4 will be added to your balance instantly.
It is unclear how long this promo code will last for or if there is a limit on how many times it can be used however I've just got my £4 bonus - don't miss out on yours!
Not signed up to Airtime Rewards? Find out what it's all about here.
Sign up today through our links here and you'll get a sign-up bonus as well as an extra £4 for using this bonus promo code.