Boris Johnson has said there will be no immediate end to the lockdown.
But what is in his plan for the next phase of the coronavirus fight and how might it affect people’s lives?
How much I can exercise outdoors each day?
From Wednesday people will be encouraged to take more outdoor exercise – even an unlimited amount.
Can I meet friends and family?
Couples and friends living in different homes will be able to meet up in parks in England for the first time in almost eight weeks, under new lockdown rules.
In a significant change, a Government official said that as long as a two-metre distance is maintained, people will be allowed to sunbathe or chat with one other person from a different household.
Foreign Secretary Dominic Raab said on the Today programme that you could meet both parents “as long as they stayed 2m apart”.
It means couples, friends and relatives who have stayed apart for almost two months can at last reunite in person, provided they stay the appropriate distance away from each other.
Can I go back to work?
You should continue to work from home if you can, but if that’s not possible you should go to work.
Anyone who cannot work from home, perhaps those in construction and manufacturing, “should be actively encouraged to go to work”, the Prime Minister said.
Downing Street said that would apply from Monday.
Mr Johnson said the Government has been establishing new guidance for employers to make workplaces “Covid-secure”.
Can I drive elsewhere to enjoy the outdoors?
Yes, you can drive to parks or beaches within England but only with members of your own household.
People are not allowed to cross the border to Wales or Scotland for leisure activities if different restrictions are in force.
When I’m outdoors can I play sports?
Yes, but again this must be limited to doing so only with members of your own household.
Tennis courts and golf clubs could reopen in England from Wednesday, so long as social distancing measures are enforced.
Other permitted activities will include water sports and angling.
Can I use public transport?
Mr Johnson advised people to avoid public transport “if at all possible because we must and will maintain social distancing, and capacity will therefore be limited”.
He said public transport operators, just as with workplaces, will be following the “Covid-secure” standards.
Transport Secretary Grant Shapps said on Saturday that even with England’s public transport network running at full capacity, it could only safely cater for 10% of the usual passenger load with the two-metre social distancing rule in place.
Are shops reopening?
A phased reopening of shops could begin at the earliest by June 1, Mr Johnson said.
Subject to conditions and scientific advice “at least some of the hospitality industry and other public places” could be reopened with social distancing measures in place by July at the earliest, he added.
What about schools?
Efforts could be made to get primary pupils back into schools, in stages, starting with reception, Year 1 and Year 6, at the earliest by June 1, the Prime Minister said.
Remaining primary school year groups could be added at later dates.
For secondary school pupils who have exams next year, so Years 10 and 12, the aim is to get them “at least some time with their teachers before the holidays”, he added.
Government officials said the remaining secondary school age pupils in England would not be expected to return to school before the summer holidays.
Mr Johnson promised detailed guidance “shortly” on how to make things work in schools and shops and on transport.
Can my friends and relatives visit me from outside the UK?
Most will soon be subject to a quarantine if they do.
To prevent reinfection from abroad, Mr Johnson said he was “serving notice that it will soon be the time – with transmission significantly lower – to impose quarantine on people coming into this country by air”.
No further detail was given but a previous report suggested travellers from Ireland, the Channel Islands and the Isle of Man will be exempt from the quarantine.
A joint statement from Downing Street after the address said Mr Johnson and French President Emmanuel Macron had agreed quarantine measures would not apply between France and the UK “at this stage” for the “management of our common border”.
What if I don’t obey the social distancing rules?
You could be fined, and the financial penalties will be increased in order to enforce the social distancing rules.
Fines for breaching coronavirus regulations will rise from £60 to £100, while payment of the fine within 14 days will reduce the sum to £50, up from the present £30.
Repeat offenders will see the fine double for each subsequent breach to a maximum of £3,200.