While I appreciate how difficult dealing with this situation is, the government have been frustratingly inconsistent at times:
People who are not in essential services should stay at home.
Let's cut public transport to encourage people to stay at home.
Only essential workers who can't work from home should use public transport.
Wait a minute - why are people still packing out the tubes? They should be running a full service to prevent this from happening.
People who can't work from home and are not essential workers can still go to work if their office can practice social distancing.