Ms Brenner said: “I am honoured to have been chairman of AMP. I am deeply disappointed by the issues at hand and am particularly concerned for the impact they have had on our customers, employees, advisers and shareholders.
“As chairman, I am accountable for governance. I have always sought to act in the best interests of the company and have been in discussions with the board about the most appropriate course of action, including my resignation.
“The board has now accepted my resignation as chairman as a step towards restoring the trust and confidence in AMP.”
Mike Wilkins will lead AMP as executive chairman for an interim period.