For those with address in UK: Receive free £20 after setting up account and topping up with £20... (takes a few mins only) If referral doesn't go through once you pressed on link and installed, on the app you can manually add the referral code within 2 weeks of setting up account...

Set up account, order a card and make 3 x £5 transactions within a few days (can be done with the virtual card you get on the app)

First month free when ordering a free sim from this link, and super cheap 1 month contracts with roaming in EU

£20 amazon voucher after paying for 2 months