"LIVE ammunition has been found lying in the doorway of a busy high street shop. "The .22 calibre short round bullet was found at the entrance of the 99p Stores in Walthamstow High Street on Wednesday morning, November 1. ... "The bullet, of Swiss origin, was still in its brass casing, complete with enough gunpowder for it to fire itself. ... "The bullet has been examined at a Metropolitan Police laboratory and details about it kept for future reference." "Bullet found in doorway" by David Williams. 9 November 2006. http://www.guardian-series.co.uk/news/walthamforest/walthamforestnews/display.var.1013959.0.bullet_found_in_doorway.php How do we know there aren't more of these out there quietly lurking with enough powder to fire themselves? There's only one reasonable course of action: Have the Prime Minister get on television and make an hysterical speech and then evacuate London.