I find this very odd.
I admire Steve, I admire anyone who has built a large, respectable business in a niche market. I am guessing you have worked extremely hard and focussed and sacrificed to get to where you are. Fair play to you. And then to top it off, you have been asked to represent the industry as a whole, to help provide a working foundation for future H&S within the industry.
What I find odd, is people (window cleaners) come on here asking if it is 'safe' to clean solar panels, in the same way they would ask about the correct ladders or safety aids for ladders etc. It's usually at times like this people muck in to give help and advice.
Steve, you obviously know the safe way to clean solar panels, so why can't you offer that advice?
Why can't you just say 'OK guys, to clean a domestic solar panel safely, you need to do XY and Z'
Once regulations are brought in, then fair enough, everyone will abide by them and if they need to, they can go on the courses for best practice. In the short term some window cleaners would benefit from some safety guidance.
Is it irony that you set yourself up as an expert in the field, providing H&S expertise for future working practices and yet you can't even help people on a forum to stay safe when working!