Costa Coffee In The UK have recently launched a new Costa Coffee Mobile app which provides a free drink to new users when signing up to Costa Coffee using the referral code: VBVP6. Full details on this exclusive offer are available at: https://www.referandsave.co.uk/costacoffee/ Sign up using the code to get a free drink and experience the world of Costa Coffee. You can use your free drink reward for any barista prepared drink of any size at any store in the UK