A UKGC licence is the starting point, not the whole story. Check that RTP...

https://speedy-wiki.win/index.php/How_Do_I_Tell_If_a_Casino_Lobby_Is_Padded_With_Low-Effort_Games%3F

A UKGC licence is the starting point, not the whole story. Check that RTP figures are easy to find, withdrawals have clear timeframes, and responsible gambling tools are easy to access