Ed Miliband has tweeted that Douglas Carswell's defection show the Conservatives are "too divided to stand up for hard-working families".
Douglas Carswell’s defection is not just a blow to David Cameron. It shows the Tory Party too divided to stand up for hard-working families
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During their visit, Charles and Camilla will meet local businesses and people in the city centre before joining a reception in the Guildhall