The role includes overall responsibility for Azets and Blick Rothenberg, with over 160 offices across the UK and the Nordics.
Horne became deputy CEO of Azets in February 2021 working alongside former CEO Dawn Marriott, who will remain part of Azets as a board member.
He has over 15 years’ experience in senior leadership roles within accountancy, previously being managing partner of Campbell Dallas – a Scottish accountancy firm.
In addition, Aase Aamdal Lundgaard and Ian Smart have also joined the board as non-executive directors.
Aamdal Lundgaard, is a state authorised accountant with experience across a range of senior leadership appointments within the profession.
She has held several leadership positions in Deloitte including CEO Deloitte Norway as well as head of its audit and advisory practice, a member of the board of directors of Deloitte North and South Europe LLP and sits on the audit and risk committee and the transaction committee.
Meanwhile, Smart works with a range of businesses and people as an adviser and executive coach. In July 2020, he co-launched Impact Central, an accelerator whose mission is to grow a “community that supports impact start-ups and lets them thrive”.
Prior to this, he was a partner in Grant Thornton for over 20 years where he held a number of senior roles both in client-facing and leadership capacities.
Horne said: “I am delighted to take on the role of CEO at an exciting time in our growth, as we enter the next phase of Azets’ development. I’d like to thank Dawn for her support and guidance, and I look forward to continuing working with her as a member of the board.
“Since launching as Azets in September 2020, we’ve continued to grow and have ambitious plans for the years ahead. We have just recruited over 200 graduates into our UK business and hope to employ an additional 550 people across our business next year.”