Back in the 80's early 90's when I was an employer, I had to be V.A.T. registered. I was so worried that it would have an adverse effect on my residential work. It made no difference at all. Joe and Josephine Public just accepted it. I always quoted £xxx plus V.A.T. Back in those days, it was a legal requirement to show V.A.T. as a seperate item on all invoices over £50, so I didn't want to mess around with two different systems.
As for administering the V.A.T. system, it was a piece of cake. So easy to do. As long as you are disciplined and don't spend the tax you've collected, you can use the extra cashflow to either minimise your overdraught charges or to gain interest in a savings account. Overall, I reckon it took about 10 minutes extra a week in paperwork and perhaps an hour or so at the end of every quarter.
Organising your business under different names to evade V.A.T. is, as Doctor Carpet points out, illegal. Or it certainly was back in the 80's. Penalties can be severe.
If you de-register from the system, remember that as you are unable to reclaim the tax paid, your costs will increase, so your charges will need to go up to compensate.
Safe and happy cleaning

Ken