Dave:
99% of our jobs are WFP.
Of course I charge a franchise fee, there wouldn't be any point in doing it if I didn't

All new franchisees pay an 'up front' fee, but a lot of that is to cover the equipment, uniform, van signwriting, training and initial customer base. After that there is an ongoing 'royalty' - a percentage of the franchisees turnover that they pay to us in return for as much work as they want and services such as marketing, round record maintenance, and all the help, advice and guidance that they want. I also supply pure water and I keep a good stock of spares so they can rely on having spares available as and when they need them.
As to how I franchised the business, I just went ahead and did it.

You don't have to 'go to a franchise solicitor' - as with most things you can do it yourself. The important thing is to define the relationship - I work for the franchisees, they don't work for me. That's why they pay me. That's the difference between franchising and sub-contracting, if the relationship is properly set up, there can be no possibility of the franchisees being deemed to be employees. The same can't be said of sub-contracting