My early 20s DD works in security. She recently accepted work from a middle man who offered £10ph on a self employed basis. Middle man gets the contracts (events, gigs, festivals etc) and supplies the staff.
A combination of recent illness, the cost of commuting to events 100s of miles away, and other issues has made DD decide that she no longer wants to work for middleman.
Before becoming ill last week DD had verbally agreed to work for middle man at the other end of the country. She would be due to travel to the event tomorrow.
Middle man is struggling to get personnel for this event as he's now WhatsApped the whole group of potential workers and told them that if they don't work they will be "fined" £50 each from their last earnings, which are due to be paid at the beginning of next month.
DD won't be giving in to his threats. She's furious. Also, it now seems quite possible that she isn't self-employed at all but that this is simply a way of middle man taking a big cut and avoiding having to pay tax and NI for the personnel he supplies.
Please can someone help with a suitable response to middleman which will make the legal repercussions of withholding DD's extremely hard earned money very clear to him?