Keith joined Grant Thornton Isle of Man as Head of Tax in August 2025. He began his career with Grant Thornton UK in 2002, where he completed his training and became a member of the Chartered Institute of Taxation.
Keith took the strong technical foundation provided by training at GTUK and moved into industry, gaining valuable commercial insight during 17 years working in global financial services and technology led firms.
During his time as an in-house advisor, Keith worked in FTSE100 and FTSE250 financial services groups as well as high-growth fintechs, leading in-house tax functions, managing audit and compliance cycles across multiple jurisdictions, and advising on a wide range of tax matters.
Guidance on Pillar Two tax compliance, ETR assessments, and top‑up tax obligations.
Overview of Isle of Man’s implementation of OECD Pillar 2 global minimum tax rules.
Isle of Man Budget 2026 analysis, key tax measures, business and personal finance impacts.
