Johnston Carmichael has strengthened its audit offering in Aberdeen with the appointment of Teresa Gilligan as audit director to support the firm’s continued investment in the North East.

Teresa joins the leading UK accountancy and business advisory firm with more than 17 years’ experience in audit and assurance, gained across Big Four and other professional services firms. She has worked with a diverse range of clients spanning sectors including industrial manufacturing, logistics, retail and property, supporting listed, private equity‑backed and owner‑managed businesses.

A dual‑qualified accountant, Teresa is both a chartered and a certified public accountant. She has spent a significant part of her career working internationally and brings extensive experience delivering audit engagements under both UK and US reporting standards.

Alongside her client work, Teresa has undertaken a range of quality and technical review roles while also supporting internal training and people development by implementing strategies that foster culture and long-term talent growth.

Based in Aberdeen, Teresa will focus on developing her audit portfolio across a broad and diverse client base, with a particular emphasis on the energy sector. This is a key industry for the firm, which supports more than 800 businesses operating across the sector.

She will also support the wider team as the firm continues to grow and develop its audit services. Johnston Carmichael audits more of Scotland’s top 100 businesses than any other accountancy firm.

Teresa said:

“I’m pleased to be joining Johnston Carmichael at such an exciting time for the firm. It has a well‑established reputation for delivering high‑quality advice while maintaining a genuinely collaborative and client‑focused approach."

“Throughout my career, building strong relationships with clients has always been a key priority, and Johnston Carmichael’s relationship‑led ethos strongly resonates with me. The firm’s ambition for growth, combined with its commitment to doing the right thing for its clients and its people, really stood out."

“The energy sector is such a vital part of the North East economy, and I’m looking forward to working with clients across this space, supporting them through the challenges and opportunities presented by a changing landscape.”

David Wilson, Aberdeen Office Head & Audit Partner said:

“The energy sector is undergoing a period of profound transformation, and businesses operating within it face a uniquely complex set of financial reporting and regulatory challenges. Teresa’s expertise means our clients in the energy industry can have confidence they are receiving audit and assurance services that truly reflect the realities of their sector."

“As we mark 90 years in business in 2026, Teresa’s appointment reflects our ongoing investment in our people and our future. With almost 900 colleagues across the firm, Teresa’s values and experience align strongly with our culture, and we look forward to the contribution she will make to our audit team.”

About Johnston Carmichael  

Johnston Carmichael is proud to be a leading independent UK accountancy and business advisory firm. With over 900 sharp minds across its offices nationwide, the business delivers specialist sector insight and expertise. Together, its people create enduring impact and have been investing in the next generation of businesses and advisers for more than 85 years. Committed to Corporate Social Responsibility, the firm is gold sponsor of the Kiltwalk and a member of the Mindful Business Charter. As a member of Moore Global, it is also connected to a community of more than 30,000 people in 110 countries worldwide.  

For more information on Johnston Carmichael, please visit here.