Hi Tomy.
If your still looking for insurance cover you could give this company a try. Best to call them on Monday and ask for a quote. If your a member of the Federation of Window Cleaners they will also give you some discount.
Their key benefits are they can insure you for both public liability and employers insurance, their policy also includes treatment risks and loss of keys etc to your customers premises.
I've been using them for a couple of years 2 million public liability and 10 million employers liability. never had to make a claim thankfully.
www.fwc-insurance.co.uk Hope this helps
Simon.
P.S you can also arrange this on monthly payments
