You can get a free £5 when you sign up for a Monzo account via a referral link.
Monzo is an app-only current account with various tiers but you only need to sign up to the free account to be eligible.
To sign up, click on the referral link and add your mobile number. Then download the app from your App Store and complete the sign up process. To get the bonus you will need to top up your account and spend using your new Monzo card within 30 days.
Referral link (with £5 bonus): join.monzo.com/c/7p6ssry
Non-referral link: www.Monzo.com