Re: The other side of the coin?
Many previous contractors I know not only switched from running their own service company to an umbrella, but at the same time switched contracts to avoid HMRC saying "Last month you were outside, this month you're inside for the same assignment. Are you sure you used to be outside? Let us take a look at your recent history".
As for HMRC comparing people in similar jobs, and deciding that there is an inequity, that runs much further than just contractors working through umbrellas. If that is a concern, they need to use the same scrutiny for the big consultancies as well. After all, they're saying they want a level playing field.
As a contractor who has actually been working through one of the large umbrella companies for 14 years (after running my own company for 10 years), long before the latest set of IR35 restrictions, I do not feel that I have a target on my back. Much as I have to apologise to my colleagues who have had to change their working practices, with all the pain that goes along with it, I've been sitting back rather relaxed watching this all go by. I've not had to use an umbrella other than the one I selected so long ago, and the lack of filling in VAT and tax documentation was and remains refreshing since I switched.
When I went under an umbrella, I knew that I would be paying both NI's, plus umbrella fees (and of course the income tax) from the assignment rate, and because I was previously running the payroll and VAT for my own company myself, I knew what these were likely to be. This should have been clear to anyone who thought it through, although at the time. this was not enumerated by the umbrella, so making it clear now is actually much better. The other mandated employment costs, such as the apprenticeship levy have been a burden (if I was still running my own company, I would not cross the threshold where it needed paying), and I've just accepted the workplace pension that was foisted upon me, even though I could probably get a better deal.
The problem HMRC are going after is not the large umbrellas, most of whom talk to HMRC on a regular basis anyway, but the small, often single employee plus a director (who are often out of the country) ones that popped up as a way to avoid paying tax on the umbrella fees, and which also pop up, charge (but don't pay) VAT or the employment costs, and then disappear before the HMRC's searchlight finds them. And they should be clamped down on, because they are unambiguously stealing from the taxman.
But there is a problem here for the contractor/employee. As has already been pointed out, the contractor normally has money in the channel, paid or owed to the umbrella for the work already performed, but not yet sent to their contractor/employee. This money is at risk if the umbrella is shutdown, because HMRC will have a higher priority claim on the money that the contractor themselves, so they could lose it.
I had a similar concern with an agent I once worked through. It looked as if they were going down, as they were getting late paying the invoices to the umbrella, and did not respond to mail or phone calls, while all the time aggressively chasing the company I was providing services to. The umbrella did not want to chase their invoices hard, and at one point, I could have lost 2 months money for work already done if they had gone down. Fortunately, the situation resolved itself (I think that the umbrella finally decided to insist on the payment terms), and I never had a problem for the rest of that assignment. But it is a worry when it happens, and if it were to happen, there is no statuary redundancy, another thing that contractors miss out on.