The house on the corner of our cul-de-sac has been empty since the middle of last year after the old man who lived there died, His family put it on the market in November and the sign had the Sold Subject To Contract bit added just before the lockdown started, It's still empty but today there was a car in the drive that I recognised as belonging to the original owner's son, presumably checking up on the place. He can't have been there long only an hour or so.
Do we consider that non-essential? The house has been empty even before anyone heard of coronavirus and he probably had no contact with anyone coming but it hardly fits with the guidelines.