A Qatar Airways plane, which was escorted to Manchester Airport by an RAF jet, is surrounded by emergency services vehicles.
A passenger at the airport tweeted:
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The book by Cameron comms chief Sir Craig Oliver reveals that Mr Cameron was frustrated with Theresa May's neutrality during referendum.
Cloud and outbreaks of rain will ease away eastwards during the morning, clearing the east coast around midday with sunny spells developing.
Police and emergency services are attending the scene.