UKIP does not have a distinctive socio-economic demographic base. How many groups of local councillors (as opposed to individuals who function as essential independents) do they even have?
UKIP control the town council in Ramsey in Huntingdonshire, and also have all 3 of its district councillors and the county councillor. And they've had a few strong results in local elections in the area recently as well - the upcoming district by-election in nearby Earith may be worth keeping an eye on.
But as far as Westminster seats are concerned, North West Cambridgeshire is safely Conservative (and will be split up with the new boundaries if the initial proposals go ahead unchanged).