David Cameron said "further action" is needed to establish more effective control of migration as he visited Rochester - the constituency where Tory defector Mark Reckless will stand for Ukip.
Reports have suggested that Cameron is considering a range of options to limit the number of EU jobseekers entering the UK, he will make clear to his European counterparts that he will campaign for a British exit during an in/out referendum if he does not get what he wants.
The Prime Minister is coming under intense pressure from Conservative backbenchers to make his negotiating position clearer ahead of the Rochester and Strood byelection on November 20.
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Neil ‘Razor’ Ruddock, Jake Quickenden and Dan Osborne are among the famous faces taking part in the match in Saffron Walden, Essex.
The measures are set to be unveiled on Monday.
The blacklist includes illegal landlords convicted over shoddy housing and other serious crimes.