If it was down to me, I'd have sent every household a letter stating the occupants' full names, dates of birth and address.
I would then allow the early hours, until 11 am for the elderly and vulnerable (the latter would need to get a letter from their doctor) to go out and get things done.
Starting at 1100 hrs, people living at a house number ending in the digit '1' would be allowed out, e.g. 1 Calefonian Way, 11 Caledonian Way, 21 Caledonian Way, etc. They would need to be back at home for 1200 hrs.
At 1200 hrs, people living at a house number ending in the digit '2' would be allowed out.
At 1300 hrs, people living at a house ending in the digit '3' and so on.
The police would do random checks, and anyone not carrying their letter and photographic ID, or flouting the rules, would be arrested and prosecuted for endangering the public's health. Their punishment would be a day in the stocks, where the public can throw rotten food at them and a £1,000 fine. They would then be fitted with an electronic tag and monitored.
It's time the government got serious about this.
Key workers would also get a letter from their employer.