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On Monday, 19 January 2009, a date previously known as Blue Monday, British banking shares collapsed in a rout of selling after Royal Bank of Scotland (RBS) announced the biggest corporate losses in British history. The shares fell over 67% in a single day. Shares in all other British banks suffered heavy losses.The next day Lloyds Banking Group and Barclays fell sharply again. RBS and HSBC continued to fall.