An unprecedented £82million security operation has been ordered for the ceremony.
Snipers will be sited on rooftops with armoured vehicles on streets.
Washington is being turned into a fortress today to protect Donald Trump during his inauguration
At least 28,000 security personnel will be deployed and a 100-block area around the National Mall will be closed off with everyone entering told to go through a checkpoint.
I get a sense of the history and that this particular inauguration is a very significant one
The heavy security operation will be coordinated from a multi-agency communications centre at a secret location in Virginia.
A one-million strong crowd is expected, 350,000 of whom will be protesters with fears of riots if Mr Trump’s supporters and his opponents clash.
Such numbers have not been seen since 100,000 anti-Vietnam War protesters attended President Nixon’s second oath-taking in 1973.
An unprecedented £82million security operation has been ordered for the ceremony
A one-million strong crowd is expected, 350,000 of whom will be protesters
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Pro-Trump groups include large numbers of bikers who have vowed to create a “wall of meat” with their bodies to protect their hero.
The ceremony at the Capitol will begin at 4pm UK time and Mr Trump will be sworn in an hour later.
He is expected to make a 20-minute speech which his spokesman Sean Spicer said will be “a vision of where he sees the country”.
Nigel Farage, the first British politician to meet Mr Trump after his election, will attend the inauguration.
The former Ukip leader said before attending a party in Washington tonight: “I get a sense of the history and that this particular inauguration is a very significant one. I’m very excited about it.”
Nigel Farage who met Mr Trump after his election, will attend the inauguration
Donald Trump's Action Plan
Thu, January 19, 2017
What follows is Donald Trump's action plan to 'Make America Great Again' within the first 100 days of Presidency.
1 of 10
FIRST: Propose a Constitutional Amendment to impose term limits on all members of Congress.
More than 100 million Americans are expected to watch it live on TV, with a worldwide audience five times as big.
It appeared that billionaire Woody Johnson, a member of the Johnson & Johnson cosmetics family, will be the new US ambassador to the UK.
In a passing remark, Mr Trump said he was “going to Saint James” and added: “Congratulations, Woody.”
Ambassador to the Court of St James’s is the official description of foreign ambassadors in London.