Sir Hector Sants, once the UK's top financial supervisor, is to join management consultant Oliver Wyman, a year after he stepped down from Barclays because of stress and exhaustion.

Sants will be a partner and vice chairman of Oliver Wyman, providing advice to some of the banks that he regulated as chief executive of the Financial Services Authority, the predecessor of today's Financial Conduct Authority, between 2007 and 2012.