The government is now advising people to “act like you’ve got it [Covid-19 infection]”. 
This is actually quite good advice. Covid-19 is a respiratory infection with significant asymptomatic transmission.
One point I guess the government is hoping no one mentions too loudly is – if the advice is “act like you’ve got it” then that in effect renders the £22 billion Test and Trace system redundant. Oh, not to worry – most of it went to our friends in the private sector which was the whole point anyway…