Derek Mitchell will take over as managing partner of the firm’s Aberdeen office on 1 April and in Edinburgh, this role will be assumed by Lyn Calder.

Both will oversee the day to day operations of their offices which includes responsibility for teams of 250 and 40 respectively. All seven of AAB’s business units; audit, business advisory, tax, corporate finance, payroll & employment taxes, consulting and wealth management service, are represented in both offices.

Mr Mitchell, a tax specialist, currently leads the firm’s business advisory group and has made a significant and valued contribution to the management of the business since he joined 14 years ago.

Ms Calder joined the corporate finance team shortly before AAB announced its arrival in Edinburgh in June 2018. As head of deals in the Central Belt, she has played a key role in spearheading the growth of the firm in the Central Belt.

In these new roles, the two will be supported by a dedicated executive board, led by Graeme Allan.

Graeme Allan said: “We are delighted to announce both Derek and Lyn’s appointments to Managing Partner, both of which are richly deserved and recognised as such by both clients and colleagues.

“As the business continues to expand in both the Central Belt and Aberdeen, each of them will play a key role in building on the strong track record we have achieved whilst ensuring that we continue to evolve, improve and invest in our business working alongside myself and the board.

“It is an exciting time for our business as we work together to embrace technology, develop future talent and drive new growth opportunities across all our divisions. I am extremely positive about the future of our firm.”

Gill Pryde, senior partner, added: “These appointments are recognition of the achievements of both Lyn and Derek in their time with the firm and their commitment to AAB, our people and our clients.

“As managing partners, they each have a responsibility to continue to build our talented team and ensure that our strong culture of awesome client service continues so that we meet our clients’ diverse needs. We wish them both well in their exciting new roles.”