it,s there gaurantee that you are fully insured and security checked
The Fed asks for proof of my insurances, but I don't recall ever being "security checked" by them. Up here in Sunny Scotland window cleaners have to be licenced by the local council, which involves being vetted by the police to make sure that you are a fit and proper person, and able to be "let loose" on people's homes while they're not in, amongst other things.
And back to wayne99's original topic . . .
If you're a Fed member, you can get a book of canvassing leaflets which puts forward some disadvantages of using non-insured window cleaners. Only £1 per pad of 100 pages or £4 for five of them.
Snap 'em up - what a bargain!