Depends what cleaning you do, windows, carpets, general cleaning, commercial, domestic etc
Basic policy should include liability 5 mill or 10 mill, employers liability (if you employ) 5 mill.
I have treatment risk, loss of customers keys, miss use of items by employee, tool cover and other things.
Try polished or gleaming and just call for a quote they will all tell you what you can have or require.
£37 PCM my policy