Speaking before the vote, Nick de Bois, the MP for Enfield said: "I hope the board are of no doubt that a vast swathe of my constituents are not in favour of this proposal."
Tim Peachey, the interim Chief Executive at Barnet & Chase Farm NHS Trust said: "Changes will put health economy ahead in London."
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Man who has barricaded himself in house for three days may have a stash of petrol and other explosives, police say.
Transport secretary Chris Grayling said MPs will decide this week about where to allow airport expansion in south east England
The Met Police has thanked residents in Northolt for their patience but has warned the armed stand-off could take time to resolve.