Linen cloths, baby's nappy's, copper pipe, and washing up liquid, are just a few items that makes this guy the expert, and the fastest window washer in the west,
I expect every british window cleaner will be faster than this guy, he recomends to clean the windows twice a year so must have a lack of experience.
If he seen our Terry Burrows in action he would probably swear blind that Terry never moved.
There has also already been recommendations on this site as how to remove lime scale from windows including the use of 000 wire wool.
Good thread though it gives us brits a boost, when we usually trail behind the americans. One thing I can say its nice to see the humble squeegee saved someone's life in the world trade centre. Bring it on squeeky