I have seen many readings of the numbers that indicate Reforms biggest obstacle is Nigel Farage. He may think people have forgotten he is "Mr. Brexit", but clearly enough do.
The next general election campaign may well start to feature the UKs relations with the EU as a talking point. And given the growing sentiment towards rejoining (spoiler alert: ain't gonna happen) a party led by Farage may have reached the limit to growth.
We've already seen Reform councillors calling for more immigration. And ol' Nige himself is quite happy to see more foreigners in the UK.