'Tax dodge' revelations tip of iceberg

New findings expose secretive global industry serving wealthy customers

The former HSBC employee who leaked sensational secret documents alleging the bank helped wealthy customers dodge millions of dollars in taxes warned on Tuesday that the revelations are just the "tip of the iceberg".

The files created global shock waves on Monday, spotlighting the financial dealings of the world's ultrarich and prompting British lawmakers to launch an inquiry into the London-based bank.