Sorry to snap at you earlier, but what you said is nonsense.
Some of the stuff I read from Americans on FR about Britain is frighteningly lacking in even the basic knowledge.
And yes, the Triads are another well known machete using group in the UK. There have been many Triad machete crimes over the years in the UK, inc murder.
Absolutely no need to apologize. Have a good day!
Of course, it isn't one bit more goofy than the Brit commentaries about America (particularly the “Gun Culture” nonsense) which UK websites are rife with.