pbr Towns and villages left stunned by Derrick Bird's killing spree fell silent earlier - a week on from the carnage which left 12 dead.br ppbr Memorial services were held throughout west Cumbria where father-of-two Bird ran amok, firing at friends, family and passers-by.br ppbr Bird first killed his twin brother David and family lawyer Kevin Commons before seemingly looking to settle scores at the Whitehaven taxi rank where he worked.br ppbr The cabbie then drove through the countryside, taking potshots at random people. His rampage ended only when he abandoned his car and made off on foot into a remote wooded area where he took his own life.br ppbr To mark the tragedy, Wednesday's eight services each began and ended at the same time, starting at 11.45am and culminating with a minute's silence at midday.br ppbr In London, the House of Commons also fell silent at midday, as MPs observed the minute's silence ahead of Prime Minister's Question Time.br ppbr The reason Bird flipped remains unclear and police are continuing to trawl through reams of documents and a computer seized from the killer's home.