The Scientific Advisory Group for Emergencies (SAGE) provides scientific and technical advice to support government decision makers during emergencies.
As they move towards easing the lockdown, it is obviously more difficult for government to deliver simple messages for us all to follow.
As new evidence or data emerges, SAGE updates its advice accordingly. Therefore, some of the information in these papers may have been superseded at a later date.
"Material was redacted from the first document in accordance with the standard principles governing Freedom of Information when it was first published. However Sir Patrick Vallance and No10 agree that such SAGE documents relating to COVID-19 should be published in full, in the interests of maximum transparency, with exceptions only for matters relating to national security."