I KNOW BECAUSE MY 600 CUSTOMERS LOVE OUR METHOD. 
I must be stupid then as my 2000 customers all love WFP, do'h, I knew I was going wrong somewhere, must give my insurance company a ring so I can increase my premium back to £2,300 to allow me to use ladders for ALL my work. Oh and while I am changing my ways back to traditional that I did for some 14 years I will pop out and get some extra gripping shoes, haven't slipped off a roof for a while, can't wait to do that again!!!
Thanks for the tip

Am so bored with this mindless argument. A majority of these postings are so misunderstood. Boys and girls, whatever method you choose thats your choice, NO ONE is forcing you to do either (yet). For all you traditional window cleaners out there, congratulations, its a great method and one that brings good results in the right hands. For all you WFP cleaners again congratulations, it also gives great results in the right hands.
Personally, why have I converted all my vehicles over to WFP?
1) Some of the Blue Chip and County Council authorities are hot on H&S and have stipulated that this is their preffered method. So as a business I don't want to lose their contracts so that was reason number 1.
2) My Insurance company offered me a 40% price reduction if I was WFP - This is a considerable saving on a premium of £2,300 so reason number 2.
3) On some of my commercial contracts the apex was only cleaned via platfrom access. This increased my cost to the client, WFP allowed me to get to these without the additional cost, Reason number 3.
4) I have several hundreds of customers who have conservatories with window above, WFP allows me easier access to cleaning them, hence I can charge an extra 50p or £1 to clean them, this in turn paid for the van's WFP system, reason number 4.
5) I have suffered over the last 5 years two serious falls of ladders by my employees, this is something I don't have to worry about as much with WFP, reason number 5.
I hope I have painted the bigger picture here so all of you can understand there is more to consider than just the H&S hype!
Bottom line, I converted ALL my 2000 + customers over to WFP, lost 0 customers and have about 20 houses that I choose to clean traditional, oxidised frames, powder frames, however, on the whole this method is well received.
Why do I like WFP is a personal choice, I wouldn't mock any traditional w/c as I have more than done my fair share of traditional w/cleaning and still do, what excites me is the new opportunities this system has opened up and how much easier the business is now. Looking forward to my next crew and vehicle in 3 months time.
So, what am I meaning by this long winded posting?
Guy's live and let live, don't mock either method, each has its place and its always personal preference, when and if the Government make WFP compulsery then worry about what each other is doing!
HAPPY DAYS !