15th August 2013, 06:05 PM
I would have thought it would be best to check with the people you're subcontracted to. But when I was a self-employed chippy, even though I invariably worked for other subcontractors or main contractors rather direct for the client, I was still advised to have public liability. You are in effect a separate company, so could be held liable if the excreta hit the air-mover.