Get £5 with Monzo!!!
When you open your Monzo current account.
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Monzo – great interactive app-based banking – £5 free for registering with the link below.
It has a really original way for users to keep on top of IOUs as well where you can basically settle up instantly and get your friend to provide their details later when it suits them to release the funds.
Also have a decent savings service on the side with interest. Great app and service.