Grant Thornton Channel Islands, a financial services firm with more than 300 professionals has announced the appointment of Mariane Nifas Dietrich as Audit Director within its Audit practice, further enhancing its financial services capabilities.

With 18 years of experience across multiple jurisdictions—including the Channel Islands, Hong Kong, and the Philippines—Mariane brings a wealth of knowledge to her role. She specialises in providing audit and assurance services to financial services clients, including banks, fiduciaries, and a wide range of entities within the asset and wealth management sector.

Mariane has worked closely with numerous regulated entities in Jersey and has extensive experience in auditing UK companies and exchange-listed organisations, making her a valuable addition to the team.
Commenting on her appointment, Wynand Pretorius, Partner and Head of Audit at Grant Thornton Channel Islands, said: “We are delighted to welcome Mariane Nifas Dietrich as an Audit Director at Grant Thornton Channel Islands. We look forward to the additional value Mariane will bring to our team and our client proposition.”

Mariane said “I’m excited to join Grant Thornton, one of the Channel Islands’ leading independent assurance, tax, and advisory firms. I look forward to collaborating with clients, understanding their needs, and delivering tailored solutions to address their challenges.”
This hire reinforces Grant Thornton Channel Islands’ commitment to delivering high-quality audit services and meeting the evolving needs of its expanding client base.