probably just a bunch of racist rednecks who slipped past the recruitment screening.
That £55,000 figure is no doubt highly exaggerated like lawyers/press always do.
It is one thing to plot crazys plans like this and something else for them to actually do it. For it to work is something else entirely.
Also, this was revealed during a murder trial. It was highly unlikely such a thing would ever have actually formed, not exactly breaking news.
If I wanted I could go kill someone and say they were a loose end who new about some covert plan to take over the country. Then show a bunch of guns and bombs. I would be potrayed as a nutter, not as a leader of a serious attempt on the government. That is why this is barely considered news.