A friend of mine who has a firm in London had a visit from the HSE on the site he was working. About 3 days later according to him a rep from the NASC visited the site manager to ask if the scaffold contractor was registered ( lots of sites in town don't let you have a sign board) because there was no single handrail on every lift (sg4:10).No I can't say I have mate. Why have you had a visit? Are you NASC accredited if not then what has it got to do with them ?