Good luck with that one.

The the FBI tried to get them declared a criminal organization in the States much like the Mafia but their lawyers got it stopped by proving that they aren't a criminal organization but an organization of criminals which because of Semantics is apparently a big difference.
Criminal organizations have leaders that are paid tribute by the rest of the people in the organization whereas from what the FBI said the Angels have no titular head so they don't pay any specific person tribute and each Hells Angel operates as his own crime syndicate with no approval or authority from the organization.
So far this defense has stood up in court in the States so I imagine that they'll attempt to use the same defense here and the only question will be. Is our Government and judicial system stupid enough to allow it?