: "We want to get the country back to work and we want to keep probing so we are not missing any opportunities.
"[Ministers have] asked Sage to get us further and better particulars as to how hard and fast that really is. It is important to understand how much reliance has to be placed on it.
“The response genuinely has been led by the science. It is just about understanding exactly what is required and what isn’t.
“This is not about weakening the rules but it is about trying to test if it is actually necessary to be two metres. What is the empirical evidence on this?"
Instead, education chiefs are discussing plans for limited opening in June at the earliest.
As part of the opening up of schools, it is thought primaries will reopen first and then secondary schools.
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But he did not directly address the question of whether concerned parents may be fined for keeping their kids at home over coronavirus fears.
Last night, Ireland revealed that its coronavirus lockdown was being extended until May 18 - with plans for schools to reopen in September.
Leader Leo Varadkar announced the strict coronavirus restrictions will be eased for exercise and over-70s.
Prime Minister Boris Johnson promised the nation he would outline the blueprints for how we will be released from the lockdown next week.
Last night, The Sun revealed Boris wants Britain to be back at work Tuesday May 26 as long as coronavirus cases are low enough.
And under the potential revisions being looked at by Sage, commuters could be told to check their temperature before leaving for work.
This would be to ease the surge of people rushing to get back to work and more normal life after the coronavirus lockdown is lifted.
Primary schools in Denmark opened their doors again last month after being in lockdown, and Mr Williamson confirmed that the Government was monitoring their situation.
French schools will also open again early this month.
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Education Secretary Gavin Williamson says schools will reopen in 'phases' to ensure pupils and staff have enough protection to avoid coronavirus