Leon Fellas

Associate Director

Expert Information
Qualifications BSc Mathematics and Economics
Investment Advice Diploma (CISI)
Investment Management Certificate (CFA UK)
Advanced Professional Award in Expert Witness Evidence (LET)
Professional Memberships ACA, MSCI
Services Forensic Accounting & Commercial Damages
Sectors Industrial & Manufacturing, Power & Utilities, Technology, Financial
Expert Highlights
  • Chartered Accountant.
  • Appointed as an expert and assisted the named expert on numerous occasions.
  • Extensive international arbitration experience across multiple jurisdictions.
  • Specialises in contentious valuations and the assessment of complex damages.

Leon Fellas is a Chartered Accountant with ten years of experience. He has been appointed as an expert and assisted the named expert on more than 20 occasions in matters of forensic accounting and commercial damages.

Leon has acted as, or supported, the named expert on matters before the UK High Court, UK Family Division, Cayman Islands Grand Court, Singapore International Commercial Court, Family Court of Australia. He has experience of the LCIA, ICC, SCAI and ICSID arbitration forums and has worked under UNCITRAL rules and in mediations. He has also acted as a shadow expert to single joint experts.

Leon has a background in valuations, including contentious, commercial, corporate and restructuring. He has worked for leading consultancy firms also providing services regarding disputes and forensic accounting.

Leon specialises in contentious valuations and complex damages assessments in civil litigation, international arbitration, and expert determinations. He has supported clients across a range of sectors ranging from retail, hospitality, media and telecoms, and financial to industrial and manufacturing, power, and oil and gas across Europe, Asia, the Middle East, Africa and Oceania.

Leon is an associate of the Institute of Chartered Accountants in England and Wales (ICAEW) and a member of the Chartered Institute of Securities and Investments (CISI).  He has completed an advanced professional award in expert witness evidence (APAEWE) and also sits on the advisory Members’ Panel of NEST, the UK’s biggest pension scheme.

Contact Leon
Location London, UK

Follow HKA on WeChat


HKA WeChat