The chief financial officer of accounting firm EY, Jamie Miller, resigned in June, about six months after her appointment, the Financial Times reported on Sunday.
The resignation came after the collapse of a plan to spin-off EY's consulting business and had not been previously reported, the newspaper said.
"I joined EY to help the organisation pursue a transaction," Miller said in a statement to the Financial Times.
"With that off the table I have left to pursue other opportunities. EY is an exceptional organisation with thoughtful leaders and I am proud to have been part of their journey."
Alisdair Mann, a London-based vice-chair, had resumed the chief financial officer role since Miller's departure, it said.