Zing increased the referral bonus to £30 (rather than £20). You can refer up to 20 friends and see your wallet soar with up to £600. [[https://zing.me/referrals?referralCode=Nzk4ZmZhNTctZDVjMy0zZTljLWJlYWUtMGE5MGJlNGI5NjUy https://zing.me/referrals?referralCode=Nzk4ZmZhNTctZDVjMy0zZTljLWJlYWUtMGE5MGJlNGI5NjUy]]