Heathrow Airport - LIVE: Boris Johnson in Afghanistan as foreign secretary avoids Commons vote on third runway
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The mystery over Boris Johnson's whereabouts on the day MPs vote on the issue of a third runway at Heathrow Airport has been solved - he's in Afghanistan.
The foreign secretary, who is opposed to expansion, met his counterpart, Hekmat Karzai, to discuss extremism, the upcoming Afghan elections and human trafficking, according to the country's ministry of foreign affairs.
The government said Mr Johnson would be abroad, but refused to say where, citing security considerations.
Chris Grayling, the transport secretary, said he was "cautiously optimistic" the expansion will be backed by MPs ahead of the vote in the Commons on Monday night, but had said he had "no idea" where his cabinet colleague would be.
Mr Johnson once said he would lie down in front of bulldozers to prevent construction of the £14 billion runway.
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He was challenged on Sunday by a Tory colleague to "put his money where his mouth is" and resign as foreign secretary over his opposition to the scheme.
Senior backbencher Sarah Wollaston said that Theresa May's decision to allow him to avoid her three-line whip in support of the Heathrow plan by going abroad "won't wash" and called on him to make a "principled decision" to stand down.
Former whip Stephen Crabb told BBC Radio 4's Westminster Hour that Mr Johnson would "need to look his constituents in the eye and explain where he was on the night of the Heathrow vote".
Mr Grayling said: "I have no idea where Boris is, genuinely no idea where Boris is."
He added that "the Prime Minister has been very clear that there are people in the party who, for various reasons, have long held views about the airport and we are not going to whip those people into voting".
But Tory MP Greg Hands quit as international trade minister in order to vote against the plan because Conservatives were being whipped to support the expansion.
He said that he "wouldn't want to be abroad" for the vote, in a pointed reference to Mr Johnson's absence.
In pictures: 70 years of Heathrow
Show all 22MPs will decide on Monday evening whether to approve the expansion of Europe's busiest airport, as more than 40 Labour members said they would go against party policy and support the Government's decision.
Labour is officially opposed to the expansion but Jeremy Corbyn has allowed MPs a free vote on a measure that is supported by trade unions but opposed by the shadow chancellor John McDonnell.
Mr Grayling told BBC Radio 4's Today programme he was hopeful the plan would be approved by MPs.
"I'm cautiously optimistic, it's never over until it's over and the vote actually happens but there is strong support across the political spectrum on this," he said.
"It's not usual for me to find myself campaigning on the same side as Len McCluskey of Unite but he is right in arguing that this is a project that can make a real difference to Britain, to jobs, to connections around the world and indeed to the whole UK because this is not simply a project for London and the south-east, the connections that we create through Heathrow benefit every part of the UK."
He added that it was "very clearly a private sector project" and "the taxpayer is not going to be paying for the expansion of Heathrow Airport".
Ahead of the vote, officials said the expansion of Heathrow would create 114,000 extra jobs in the area around the airport by 2030, with an extra 16 million long-haul seats by 2040.
It would represent the first full-length runway in the south east since the Second World War, the Department for Transport said.
Speaking to the Westminster Hour on Sunday, Totnes MP Dr Wollaston pointed out that Mr Hands had resigned and suggested Mr Johnson should follow.
She said: "I think this would be an opportunity for a colleague like Boris Johnson to actually put his money where his mouth is."
Mrs May last week confirmed he would miss the vote by being "the living embodiment of global Britain" abroad.
The Government has so far declined to say where Mr Johnson will be on security grounds although reports at the weekend suggested he may be somewhere in Africa.
The number of opposition MPs prepared to vote for Heathrow suggests the Commons vote on Monday night should pass with some ease.
Those who have signed the letter include many leadership critics, including Luciana Berger, John Mann, Mike Gapes and Wes Streeting, who argue it is right to back a scheme that will create jobs and growth.
Opponents have attacked the scheme on environmental, noise and financial grounds grounds, with Friends of the Earth saying it was "morally reprehensible" and would see the enlarged Heathrow emitting as much carbon as the whole of Portugal.
Paul McGuinness, chairman of the No 3rd Runway Coalition, said: "Heathrow expansion will be bad for London and bad for Britain."
Additional reporting by PA.
Good morning, and welcome to The Independent's live coverage as parliament prepares to vote on the divisive issue of Heathrow's proposed third runway.
One frontbencher whose nonattendance is causing a deal of friction among Tory ministers and backbenchers is Boris Johnson, who has conveniently made sure he's out of the country for tonight's vote.
Sarah Wollaston, Conservative MP for Totnes, has been one of the most high-profile critics of Boris's mysterious foreign trip.
"I think this would be an opportunity for a colleague like Boris Johnson to actually put his money where his mouth is," she told Westminster Hour on Sunday.
Also yesterday, this...
Last week, government minister Greg Hands resigned in protest at expansion, vowing to "honour" his pledge to fight the project. But the move has piled pressure on Boris Johnson to do the same.
It's fair to say Boris' absence is attracting a fair amount of ire across the political spectrum. Here is just a selection of politicians to mock the foreign secretary.
Where's Boris? There are suggestions he may not be abroad at all at the minute, but is currently in the foreign office. Either way, the saga has already been made into a book, and that's what matters.
For a reminder on just how determined Boris Johnson was to fight for his constituents, most of whom are against the expansion of Heathrow, have a read of our coverage from a couple of years ago.
And here is the "bulldozers" line, straight out of the horse's mouth.
Jeremy Corbyn has denied that Labour MPs are being given a free vote on Heathrow due to union pressure.
"I have had no contact from Unite leadership at all on this issue," he said.
"Unite, as a union, does support the expansion of Heathrow. I have my concerns, and I have expressed them and therefore will be voting against the expansion of Heathrow."
Even Theresa May was against plans for a third runway, according to a now-deleted page from the prime minister's website.
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