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

https://sofiassplendidblog.inkharbory.com/posts/why-a-clean-category-navigation-matters-for-slot-players

A UKGC licence is the starting point, not the whole story. Clear RTP information helps you understand how a slot is designed to pay, while straightforward withdrawal terms and prompt processing can prevent cashing out from becoming a chore