At first glance, this can be difficult to spot. Non-GAMSTOP casinos look very much like UK licenced sites: they are designed and laid out the same way and offer very similar games. Many of the well-known gaming software providers are often on board, so many of your familiar favourite games will still be available for players.
Look a little closer however, and things become clearer. You will be likely to find a greater proportion of games unfamiliar to UK based players. In particular, scroll to the foot of the home page and things are likely to look very different indeed. No GAMSTOP logo will be displayed, or indeed any other kind of gambling support. There is likely to be any indication of licencing arrangements or registration details either (see below for detains of licencing jurisdictions).