I think the recommendation is that you should go to work, if you cannot work from home and it is safe to do so, common sense also suggests that safety starts when you walk out the door.
Now if you cannot work safely and/or there is no way to get to work safely then you shouldn’t go to work, however, in the new norm if there is work to be done and it can be done safely yet you cannot safely get to work then what should happen to you?
Furlough is bound to be wound down, paying people to stay at home isn’t affordable, if there is work to be done you shouldn’t be furloughed anyway, and unless you are shielding or actually sick then sick pay might not be payable. Also what about those people who were furloughed but it is highly unlikely that their jobs will be there at the end of lock down?
The journey out of this will be much harder than initial enforcement of the lockdown, over time tolerance and sympathy will ebb.