How do I claim my £10 reward please

As JJP2 mentioned they'll take a few weeks to 'verify' that they are still a Smarty customer before sending the voucher options to you - to prevent misuse of the reward system i.e. if someone tries to fudge getting vouchers but uses the services for only a few days or so 😂

The full article is here, will take around a month to get your voucher : 

https://smarty.co.uk/blog/refer-a-friend-and-get-a-voucher