Lorna Bryce and Robert Petchey? Lorna is possibly testing bending moment theory or an experiment in launching a projectile. Email me any other suggestions.

Says Phil Payne: 'The incident was triggered by me collecting Kit-Kat wrappers for some special offer or other. I was practising the trick of holding the balled foil between middle finger and thumb and flicking it with the index finger - something I became amazing good at later while working for Barclays. Even then I was pretty accurate and Lorna - seated diagonally from me - was the most convenient target.'