This evening's briefing was given by the Prime Minister.

Source: https://www.gov.uk/government/speeches/pm-statement-on-coronavirus-19-march-2020

I am conscious as the days have gone by that people will want to know how long we are expecting them to keep it up.
I do think, looking at it all, that we can turn the tide within the next 12 weeks.
And I am absolutely confident that we can send coronavirus packing in this country but only if we take the steps, we all take the steps we have outlined.
I know how difficult it may be, or it may seem right now, but if we do this together we will save, as I say, many many thousands of lives.
I say to business, stand by your employees, stand by your workers because we will stand by you.  And you’ll be hearing more about that in the course of the next day or so.