Thanks to John Carmichael for this picture of a site in Croydon.

He writes: "Coincidentally, I was undertaking a working-at-height risk assessment at a property just down the road. You tend to think you have problems until you see what everybody else is doing."

Email your "favourite" health and safety pictures to or send them to Nick Jones at 245 Blackfriars Road, London, SE1 9UY.

The sender of every published picture receives a £25 drinks voucher.