Ukip have continued to "peddle their myths unchallenged for decades" claiming Britain's problems all stem from the EU.
Nick Clegg will warn Nigel Farage's party have "a dangerous fantasy" which will "jeopardise jobs" at a rally in Colchester:
Ukip and others have been allowed to peddle their myths unchallenged for decades, claiming that all of our problems would magically disappear if the UK just left the EU.
But it's a dangerous fantasy. It's the surest way to jeopardise jobs, risk our fragile economic recovery, and it will leave Britain alone and diminished in the world.
More top news
Misty low cloud and some patchy fog again tonight but with mild air
Former world title challenger Michael Watson and his carer were assaulted by would-be thieves in an apparent car-jacking attempt.
Iraq's prime minister, Haider al-Abadi, announced the offensive on the western half of the city after a lull in the fighting.