Talking to the window cleaner who does mine yesterday,he said he'd been working all through the 'don't go to work' period. He said he wasn't eligible for the furlough scheme and even if he was he couldn't wait till June to get some money off the government. Then as a self employed person with a chain of regular customers you have to consider losing many of them if you don't turn up. You have to keep the round going,come rain or shine! If I still had my window round i would've gone out,though i don't know how the customers would've reacted and then of course the shops i did would've all been closed.
A woman i know teaches (or did) music from her home. She told me that she's lost all her (about 25) pupils/customers and that she's not eligible for any financial help till June and even then,she'll only get a percentage of her 'must prove' profits.