Poised on a bucket on a single scaffolding plank above thin air – this clown has missed his vocation. Let's hope he lives long enough to fulfil his circus ambitions in a more appropriate context

Structural engineer Anthony Buckley-Thorp looked out of his window to this alarming sight. As he describes it, "a roofing contractor performing a spectacular balancing act – tip-toe on an upturned bucket, balanced on a scaffold plank, spanning across two towers! Quite a brave man indeed!" Brave, yes; ingenious, yes; sensible – not very.

Balancing on a bucket