Travellers to the UK could be forced to quarantine in government centres.
International travellers to the UK - including returning Brits - will have to quarantine for 14 days on arrival.
All international arrivals must provide their contact and accommodation information.
They will also be strongly advised to download and use the NHS contact tracing app.
Those not on a short list of exemptions will have to self-isolate in their accommodation for fourteen days on arrival into the UK.
Where international travellers are unable to demonstrate where they would self-isolate, they will be required to do so in accommodation arranged by the Government.
All journeys within the Common Travel Area (from Ireland) will also be exempt from these measures.
Mr Johnson revealed the quarantine measure in order to prevent re-infection from abroad in his address to the nation last night.

"I am serving notice that it will soon be the time – with transmission significantly lower – to impose quarantine on people coming into this country by air," he said.
It was not outlined tonight how long this may have to go on for as the Prime Minister has not addressed a specific timescale.
Some people have criticised the government for not imposing this measure sooner with other countries such as Australia, New Zealand and Singapore already having introduced similar measures.
However, Mr Johnson says it is only now that it will be effective.
He explained: "It is because of your efforts to get the R down and the number of infections down here, that this measure will now be effective."
Later it was announced that Mr Johnson and French President Emmanuel Macron had agreed quarantine measures would not apply between France and the UK "at this stage", according to a joint statement.
The quarantine measure is one of a set of new rules, intended to help avoid a deadly second wave of coronavirus infections as lockdown restrictions are gradually eased.