Diccon Thornely

Diccon Thornely is a Partner at HW Fisher, part of the Sumer Group, since May 2025. Previously, Diccon served as the National Head of Audit at Sedulo from January 2023 to May 2025, where responsibilities included leading the audit practice across multiple UK offices, developing national training processes, and establishing a Graduate induction program. Prior to Sedulo, Diccon was a Director at Grant Thornton UK LLP from January 2008 to December 2022, managing a diverse portfolio that included Not-For-Profit organizations and a range of commercial clients. Education includes a Bachelor of Science in Psychology from the University of Exeter, earned from 2003 to 2006, and attendance at Radley College from 1996 to 2001.