Global bank HSBC has announced the surprise departure of CEO John Flint, saying it needed a change at the top to address “a challenging global environment”.

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Big Four accountants KPMG faces the threat of a legal challenge from the UK agency tasked with unwinding outsourcing group Carillion over allegations the firm’s audit of the company was negligent.

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Fiat Chrysler Automobiles CEO Mike Manley says the car maker is open to restarting merger talks with rival Renault.