There's a Turkish family that have a kiosk by the entrance to the Station where I work. Normally it's a little goldmine, currently their takings are down about 60%.
There's a coffee stall on one of the platforms. They only re-opened last week; the guy told me yesterday morning, he'd sold 10 coffees in the time he would previously havr sold 100.
Only about 20% of the office workers in the City of London are currently back at their offices. That means dozens of barbers, pubs, coffee shops, restaurants, newsagents, cab drivers have lost 80% of their potential customers.
Stories like these are almost certainly being repeated all round the country. That's why the government is panicking, and wants people to return physically to their places of work. Probably loads never will, though. Why would they, if they can work from home? Look at the savings for them and their employers, if they don't have to travel and don't have to rent office space. And look at the reduction in pollution.
Ironically, most of the people travelling into Canary Wharf and the Square Mile, are builders working on the new steel and glass office towers; will those towers ever be full though?