My sister has been self employed in a beauty role for 4 years, and I'd say about a third of her (more expensive) work has been passed by the books in order to avoid taxes - "everyone does it", apparently.
When lockdown was announced she obviously stopped trading and moaned how the government did nothing for self employed workers. Until the 80% funding was announced - but because she declared so little on profits she'll be getting hardly anything. She tried to claim UC but her DH is on £40k a year and is continuing to work from home so is entitled to nothing. We live in the NW and they have very outgoings so I think compared to others they're very lucky to still have £40k pa coming in, and a mortgage break.
I fell out with her today because I've been given furlough, and whilst many would love to have paid time off a 20% wage cut is huge for me with 2 kids and one income coming in - and she said "at least you're getting something it could be worse it could be me". I went off at her and said she has her DH's income and maybe this is karma for fiddling her books.
I don't want to fall out with her, if the last few weeks have taught us anything it's that life is too short for that but it really pisses me off that she thinks she is so hard done by in this.