Daisy McAndrew, who is stranded on a plane at Gatwick, said passengers had been "given no indication" of how long it would take to solve the air traffic control problem.
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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.