Ndrangheta are definitely one of the biggest cocaine trafficking groups active in Europe, but at the moment there are so many groups active that bring in tons of cocaine it's hard to say who's dominant. Ndrangheta and Camorra are both extremely active cocaine smuggling entities, but so are Albanian, Serb/Montenegrin, Moroccan, Dutch, British, Irish, Algerian, Turkish and Lebanese criminal organizations and clans as well as outlaw motorcycle groups.

When I take Belgium as an example, Ndrangheta is an extremely prominent wholesaler in the Limburg region. In the Antwerp region on the other hand - even though Ndrangheta has influence over the ports in Antwerp - it's largely Moroccan crime families that are the biggest wholesalers as well as a Turkish-Assyrian clan that was dominant for years.

In the London region, Albanians are extremely prominent, but in the South London/Kent/Essex areas some of the biggest ones are British (for instance Jonathan Parkhill got caught a few years ago after an extreme fuck-up, but he was/is a very huge name in London-based organized crime).