Before signing up, check the operator on the UK Gambling Commission register....

https://lunasuniqueinsight.inkharbory.com/posts/what-does-rapid-withdrawals-actually-mean-on-gambling-sites

Before signing up, check the operator on the UK Gambling Commission register. Read bonus terms closely, including any 10x wagering cap; don’t trust headline sums. Check mobile usability, withdrawal times, fees and limits before deciding.