There are parties in Europe, if not in Britain, who refer to themselves as "national conservative". It's a movement in more countries than the US. It has nothing to do with systems; it has to do with ideology. I've met plenty of Brits in my own extended family who would sign on with the national conservative movement. Very frustrating, to have to listen to them talk about race.
In Britain you have (for example) the British National Party - ultra-right, racist, and they have a vanishingly small membership and a tiny share of election votes. In the 2015 General Election they put up candidates in 9 parliamentary seats, and the highest number of votes they got was 489 in Charnwood (0.9% of the votes cast). The winning Conservative candidate got 26,560 (54.3% of the votes cast). This was their best result, remember. In the other 8 seats they got 0.2% to 0.6% of the votes.