The Long Fella has gone legit. As have most of the families named in the Operation Tiberius report - which includes a ton of names from the London professional boxing scene.
However, a lot of guys that associated with these families - especially ones from the East End and Essex area - still show up in huge busts. Jonathan Parkhill is an example, but you've also had Michael Read and Mark Gooch, Greg Spiers, Richard Wakeling, Chris Michaelides, Danny Sharland, etc...showing up in the last two years.
It's hard to say who's pulling the strings in the background, but you have at least a few of these busts every year so there's a ton out there we don't know about.

The thing is that UK reports on crime are and have always been incredibly sensationalist. In the 90's and the early 2000's their main focus was on the Jamaicans and the Turks/Kurds making it out like all of the crime in London was being committed by them, which was a crock of shit. The Kurds stuck to their own neighborhoods in North London and were mostly focused on heroin importation and extortion in their own community. The Yardies on the other hand ran successful drug-dealing networks, but were seldom involved in high level importation and other rackets.
Nowadays the Jamaicans and the Kurds are old news and they've shifted their focus to Albanians (first and foremost), Somalis, Vietnamese and Lithuanians. Albanians for the most part run successful drug-dealing networks, grow houses as well as prostitution, Somalis also run drug-dealing networks, Vietnamese operate grow houses and Lithuanians are involved in gunrunning for the most part. Again all of them stick to their own rackets and again it's a crock they would be responsible for 99% of the crime.

A lot of the busts that show millions of pounds worth of narcotics getting smuggled through the ports involve local villains. Local struggling businessmen are not taking out loans from foreign criminals. As hard as it may seem to believe there are still lorry hijacks happening and they don't involve foreign criminals. There's even a lot of people smuggling networks that involve British and Irish gangsters.