UKIP Stats Cannot Be Trusted?

I listened yesterday to the debate on the EU Elections on Radio Tees. Over and again, the LibLabCon disputed UKIP statistics by airily dismissing them - but with no factual backup whatsoever. Jonathan Arnott for UKIP did something none of the others could or would do - HE GAVE SOURCES FOR THE STATS HE WAS USING and invited listeners to check them out!