He's a professional journalist and while on the BBC, he has competently cross-examined politicians of any party or background, but to pretend he's not on the right is silly, as Ben Shapiro found out to his detriment.
That said, we shall have to wait and see whether Neil continues to be vigorous in his questioning of those on the right when he's on a channel that doesn't have the BBC's theoretical commitment to non-partisan neutrality.