Proactive Investors – 20 Nov 12 http://www.proactiveinvestors.co.uk/companies/market_reports/50563/hp-slumps-on-autonomy-scandal-as-wall-street-UK Index -100-stumble-0000.html
Reuters – 20 Nov 2012 http://uk.reuters.com/article/2012/11/20/uk-markets-britain-stocks-idUKBRE8710BE20121120