Fox will be starting her new role from February 2019, remaining in the role as CEO of Mark and Spencer Bank until the end of January 2019.
A spokesperson from Marks and Spencer told Mortgage Solutions that it will provide a further update on the new appointment in due course, whilst she will support with recruitment of her successor.
Fox has been CEO of M&S Bank, part of the HSBC Group, since 2014 and has led the business through the launch of its first mortgage range.