The Business Secretary Vince Cable told ITV News that he has paid cash in hand as it is "perfectly legal and moral" practice, provided it is not done with the objective of avoiding tax.
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There's no love lost between Boris Johnson and Theresa May.
Eagle, who was one of 20 members of the shadow cabinet to resign, will formally announce her intention to stand on Thursday.
ITV News visits the rural county in the wake of the EU referendum result and finds increasing frustration with Britain's political leaders.