How do I sign up to GAMSTOP? To sign up for GAMSTOP, simply head over to their website here or go to https://www.gamstop.co.uk/ and register your personal details with them.You can also call them on 0800 138 6518 (8am to midnight, 7 days a week) to register with them. Related articles Can I reopen an account once it’s self-excluded via GAMSTOP? Contact Us Can I reopen an account after a Self Exclusion? How do I close my account? How do I block gambling advertising on Facebook?