The UK Gambling Commission set new licence conditions for Casino 36 after its money laundering and social responsibility failures.
The commission said that Gamesys has been fined over social responsibility and money laundering failures.
The gambling regulator UKGC has joined Wales partners to launch the new National Strategy to Reduce Gambling Harms.
The regulator UKGC said that four gambling businesses have to pay a total of €5.1 million in penalty packages.
The commission has published an important new framework for measuring gambling harms among young people.