Thanks a lot to SWAAY for this campaign and a definition that perfectly suits me.

Indeed some people in the UK would argue that managers and employers of the sex industry are also sex workers, when I think sex workers are those who use their OWN labour force and not those of others.

This definition was apparently inspired (if my source is correct) by the article of Furry Girl and I entirely agree with her list of who is or is not a sex worker.