A UKGC licence is the base, not the full test. See if RTP is clear, cash-outs...

https://www.charliebookmarks.win/a-good-uk-slot-platform-should-make-the-basics-easy-to-check-not-leave-you

A UKGC licence is the base, not the full test. See if RTP is clear, cash-outs are quick, and tools to set limits, take breaks or self-exclude are easy to use. These checks can help show which slot sites feel fair and simple, rather than a hassle.