Unfortunately UKIP are never questioned on their other policies besides immigration (or those linked very closed to immigration).
I read their proposed health policy last year when their popularity grew... it was a shambles proposed by a former physiotherapist with very little prior...
With any luck I'm going to steal an EU persons job at some point this year (country as yet not chosen).
As Mr Farage points out this country has an open door policy, and I fully intend to use it...