Downing Street has sought to distance itself from a timetable for lifting lockdown restrictions leaked to the press, urging the public to wait for Mr Johnson to outline his plan on Monday. So far only the first step of the return to normal has been made public.
Mr Johnson outlined earlier this month his intention to see children return to classrooms on March 8.
It could then be another month until the next parts of society begin to reopen, with ministers said to be considering easing restrictions at four-week intervals so they can assess the impact each set of looser measures has on the transmission of the virus.
Under the draft plan, non-essential shops and some outdoor sport would reopen in April, followed by pubs and restaurants in May, and domestic holidays back on the cards by July.
Social distancing could remain in place for the rest of the year, with rules on household mixing slowly being relaxed over a number of months.