We’ve not had the official word yet, but the Boris advice tonight is no unnecessary contact. Basically, stay home if you can.
Less than a quarter of our bunch have come in this week. At least some of those it's because they either can't work from home, or they need IT support before they can. If it turns out to be longterm though, some of the stuff we need won't come via email/dropbox etc so we're looking at work arounds for that.