This is what other countries are doing about it.
"Outside the UK, calls multiplied throughout the day for investigations into events at HSBC’s Swiss subsidiary, whose inner workings have been exposed in data covering the period from 2005 to 2007.
• In Belgium, where HSBC Switzerland is under investigation over tax fraud allegations, a judge is considering issuing international arrest warrants for directors of the Swiss division of the bank.
• In Switzerland, senior politicians called for investigations by regulators into the scandal.
• In the United States, a leading member of the Senate banking committee asked the US government to explain what action it took after receiving a massive cache of the leaked bank accounts.
• In Denmark, the government said it would seek the names of its citizens who may have used Swiss bank accounts to avoid domestic taxes.
• In France, which has also launched an investigation, the prime minister, Manuel Valls, said he was determined to fight tax evasion and would continue to take action at home and on a European level.
Evidence that the bank colluded with hundreds of clients to conceal undeclared “black” accounts and used its Geneva branch to hand out bricks of cash in a variety of currencies from euros to pounds has been sitting in the hands of tax officials around the world since May 2010.
While France, Belgium, Spain, the US and Argentina have launched legal proceedings against HSBC and its high net worth clients, the UK’s tax authority has in five years used the data to bring only one prosecution.
Meanwhile, neither HM Revenue and Customs, the Serious Fraud Office nor the Financial Conduct Authority have taken action against HSBC."