To be honest I've found the opposite to be true and people with obvious recruiting intentions from far-right orgs get told to do one pretty sharpish. Combined ex Forces, BNP, EDL and other have tried over the years.
Currently you have Veterans against Terror, UK Freedom Marches and the D&V party knocking around on facebook but I've not noticed anything of real interest on here from them. I'd say they were more UKIP than hard right.
Like low-alcohol lager: English Defence League, do come and join us, we're lovely, us = Britain First light = British National Party light = National Front light = National Action light = Combat 18 light = HH light = 88 light, and all the inbetweenies, splitters and also-rans. Same runners and riders throughout and desperately seeking credibility through membership, someone, somewhere, anywhere.
Yeah, they've got problems with their geography, but you can look up the ones at the end of the list if you like. Just not on a works computer.