1. Search the operator’s licence number on the UKGC register. Every licensed casino must show a number in the footer; pasting it into the public register tells you the trading name, the legal entity holding the licence and whether there is current enforcement against it.
  2. Set a deposit limit before your first deposit, not after. The prompt always appears at account creation; the limit applies immediately and the only way to raise it is a 24-hour cool-off period. It costs nothing and saves the most common avoidable losses.
  3. Read the wagering line, not the headline.A “100% up to £100” with 35x wagering on the bonus + deposit, a £5 maximum bet during turnover and a seven-day expiry is materially different from the same headline at 25x on the bonus only.
  4. Check that GAMSTOP is wired in, not opt-in. Every operator on this list is required to honour GAMSTOP; if you have any history of problem gambling, register at gamstop.co.uk first and then decide which sites to look at.