Top ANZ Bank job

Sir John Key takes top banking job with ANZ

The 56-year-old was a successful banker before his foray into politics, and will join the board today, before stepping up to become chair early next year.

Sir John, who led the country for eight years between 2008 and 2016, will replace John Judge, who has been the bank's chair for more than five years.

ANZ Group chair David Gonski said Sir John's previous experience is what made him such a desirable candidate for the role.