Gamstop does not apply to land-based casinos, but only to UKGC-licensed online gambling sites. Land-based gambling operators such as land-based casinos have their own self-exclusion program called SENSE. So if you’re worried about whether or not they’ll let you into a casino, you don’t have to worry about that. I recommend you to read detailed information regarding this issue on this website https://sitesnotongamstop.net/does-gamstop-include-land-based-casinos/ , I am sure it will help you and clarify a few things.