“The banking industry has enjoyed more public subsidy than any other industry in our economy,” Paul Myners told a hearing held by the Future of Banking Commission set up by Britain’s consumer group Which?.
“It should not be able to sustain a return on equity of over 20 per cent,” the former fund manager said.
An investor in bank shares over the past decade would have lost money but a trader working for a bank would have made millions, Myners added.
A Bank of England paper has said return on equity trebled from seven per cent between 1920 to 1970 to an average of 20 per cent until the financial crisis hit in 2007.
The Basel committee of central bankers is thrashing out tougher bank capital rules to apply lessons from a crisis that forced Britain to spend billions shoring up banks.