This is a claim about the speaker’s own beliefs, not an objective external fact. The only direct public evidence I found is the interview itself, where he says he does not support those extreme libertarian positions; that confirms the utterance, but it is not independent corroboration of his private stance. I also found contemporaneous coverage describing Farage as broadly libertarian on some issues, which is consistent with the statement but does not prove it. So there is not enough public evidence to verify the claim one way or the other. Sources: High Profiles interview with Nigel Farage; The Guardian interview with Nigel Farage on 19 December 2011.