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

https://wiki-tonic.win/index.php/How_to_Compare_Two_UK_Slot_Sites_Without_Getting_Lost_in_Marketing

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.