Boris Johnson will reveal more detail on his plans to reopen society in England, after unveiling the “first sketch” of his “road map” out of the coronavirus lockdown.
The prime minister will answer questions from MPs and the public on Monday while No 10 will publish its 50-page official guidance in Parliament.
Labour’s Sir Keir Starmer criticised the PM’s plan for lacking clarity.
It comes as Scotland and Wales rejected No 10’s new “stay alert” slogan.
In Sunday’s televised address to the nation, Mr Johnson announced a “conditional plan” to reopen society, allowing people in England to spend more time outdoors from Wednesday.
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The PM also said people who could not work from home – including those in the manufacturing and construction industries – should return to the workplace from Monday but avoid public transport.
Mr Johnson said the government would “modify” lockdown measures over three “careful” steps through to July.
A new Covid Alert System with five levels would influence how quickly the lockdown – which was first announced on 23 March – could be changed.
The first step will allow people to take unlimited amounts of outdoor exercise, sit or sunbathe in parks and play sports with household members from Wednesday.
The changes in guidelines will also allow two people from different households to meet in a park if they stay two metres apart.