Its seems that Gromit is correct here TTT, and Gib is seen as part of the West Country, Euro elections-wise, but I didn't know that either. Gold Star to Gromit for his research ! Not sure about your conclusions though. I trust Labour and the LidDems also field candidates that Gib could vote for ?
But to repeat myself, its what UKIP can do in a General Election is what counts, and I still can't see that they will have much of a effect, except to steal votes from Labour and the Tories, more importantly the latter.