From the 1st of July 2019, Ben Thompson will become deputy chief executive officer and Lucy Tilley will become the Group's chief financial officer.
Ben joined MAB as managing director in May 2018 and was previously CEO of ULS Technology.
In a statement, MAB said the appointments "reflect the scale and ambitions of the Group".
On the 21st of January, Mortgage Advice Bureau announced the retirement of its chief operating officer, David Preece.
It today confirmed that David will become a non-executive director of the Group on the 1st of July.