Prime Minister David Cameron told ITV News he would choose his words carefully on the subject of UKIP and their recent election success.
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Here are the permutations as the Brexit debate continues.
A group led by the former attorney general Dominic Grieve is reported to be seeking to suspend the Article 50 withdrawal process.
Brexit makes headlines in Sunday’s papers as the Prime Minister prepares to set out her Plan B on Britain’s departure from the EU.