There was a loud noise tonight which I thought sounded like someone was banging really loudly on the staffrom windows. Investigations ensued, and no ‘banger’ was found, despite the fact that the noise continued intermittently for a period of time. Patrick’s diagnosis is that the banging is something to do with the heating. I have no theory on the source of the noise now that my ‘banging on the staffroom window’ theory has been discredited. The noise has stopped now.