In reply to Postmanpat:
> There seems to be a thing between "ex Tories" and an "old guard" , but I can't really see much in common between eg. Neil Hamilton and Douglas Carswell, although Farage dislikes them both.
Carswll and Farage mutual dislike is an interesting one. Whether it is just Farage having felt threatened or something more fundamental.
For Hamilton. I dont think any reason more complex than he is Neil Hamilton is needed as a reason for disliking him.
> UKIP originally seemed to be a something of free market small State party but seems to have tacked towards the big State interventionist end of the spectrum as it has attracted more disillusioned Labour voters.
It is rather odd. My favourite bit of UKIP history is that originally they started as a left wing party. The founder got booted out by several early members including Farage. Reason being.
drumroll
They thought he was turning it into a one man party.
Whilst I am not sure it followed the trajectory you suggest there are definitely different groupings in the party who think that exiting the EU would achieve one or the other of them. So lots of complexity but since there has only really been Farage in the past its all been suppressed and hidden in shadows.