Conservative defector Mark Reckless has rejected charges he acted in bad faith in leaving the party for Ukip.
The MP for Rochester and Strood insisted he was "trying to do the right thing by his constituents" and accused David Cameron of breaking his election promises.
"I made a lot of promises to my constituents and I want to keep those promises on immigration, on the deficit, on political reform. The Prime Minister isn't keeping those promises, I want to do so and that's why I'm moving to Ukip," he told BBC's Sunday Politics.
"We made all these promises in 2010 as Conservatives and they have been broken."
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