I've just done this thanks to a recommendation on here, so I'm spreading the message.
You just open the account and spend £5. I bought a £5 amazon voucher and added it to my amazon account.
We each get £30!
Then, you'll get a referral link so you can suggest to friends and family, and keep getting a referral bonus.
Money paid within 30 days, so ideal before Xmas.
You’re invited to join Zing – the worry-free international money app – and get £30. Eligible for 18+ UK Residents only. T&Cs apply. zing.me/referrals?referralCode=NzUxZGFmODgtMDkzZS0zZGYxLWIxMGMtMmM4NDc3M2NiNzQy