Boris Johnson will set out the 'next steps' in easing lockdown rules at tonight's Number 10 briefing.
Today is the legal deadline for the government to renew the lockdown.
And tonight the PM will lead the daily press conference, alongside senior government scientists.
But the moment is set to be overshadowed by Johnson's refusal to take any action against top aide Dominic Cummings, despite police confirming his drive to Barnard Castle was against the rules.
"The PM will be setting out later on what we will be able to do from June 1," Mr Johnson's spokesman told reporters.
He added that the next steps will be subject to the 'five tests' - particularly ensuring no action that is taken increases the infection rate, which could risk a second peak of infections which might overwhelm the NHS.
"We will of course think carefully and only set out steps which we consider to be safe."
There's speculation that if the 'five tests' can be met, the PM will reduce the lockdown level from 4 to 3.
But it's thought changes will be limited to outdoor activity - allowing barbecues and social gatherings outdoors with social distancing rules still in place.
And it's expected the official review this afternoon will give the all clear for schools to reopen from Monday.
Earlier, Health Secretary Matt Hancock said "outside is safer than indoors".
Talking about the possibility of pubs opening, the Health Secretary told BBC Radio 4's Today programme: "The good thing that we've learned from the science of this virus in the last few weeks is that the risk of transmission outdoors is much lower - it's not zero, but it is much lower than indoors.
"So, during the summer in particular, a lot of the changes that you can expect to see will be based on the principle that outdoors is safer than indoors."
