he appeared on the national state television of this country, and he appeared on it on the context of having the piss taken out of him by david fucking aaronovitch and the other one. if you think that this isn't going to be giving credibility to his views then it isn't just him who's been touched in the head. He can portray it to his followers as having both the political clout to be asked onto the show (or be forced to be asked onto the show) and being that anti establishment that they won't give him any space to say his views just take the piss out of him in that posh sneery way they did with Nick Griffin a few years ago.
I am sorry I don't find this shit to be an academic exercise the way some people seem to, giving credibility to an anti-semite and racist and his views about how Jews controlling the country, and how Obama shouldn't be the president of the USA because he might be a Muslim, has consequences in the real world, it's very fortunate for them that people like the ones who present BBC programmes aren't going to be at the sharp end of those consequences.