Jonathan Humphrey


Global Elite Thought Leader - Arbitration 2023
Global Elite Thought Leader - Financial Advisory and Valuation - Quantum of Damages 2023
Thought Leader Construction 2022
Arbitration 2023
Australia 2022: Arbitration, Construction, Investigations - Forensic Accountants
Construction 2022
Consulting Experts 2022: Construction - Quantum, Delay & Technical; Financial Advisory and Valuation - Quantum of Damages; Forensic Accountants
Commercial Litigation 2022
Expert Information
Qualifications BSc (Hons) Economics
FCA, Chartered Accountant
Professional Memberships Fellow, Institute of Chartered Accountants in England and Wales
Services Forensic Accounting & Commercial Damages, Quantum
Sectors Industrial & Manufacturing, Financial, Power & Utilities, Resources, Technology, Buildings, Transportation Infrastructure
Expert Highlights
  • Chartered Accountant and fellow of the Institute of Chartered Accountants in England and Wales.
  • Testified in cases with disputed values up to US$1.5 billion.
  • Proven as a credible witness under cross-examination, including concurrent evidence.
  • Regularly appointed as the expert on matters in Asia, Australasia, Europe, Africa and the Middle East.
  • Specialises in forensic accounting and the quantification of damages.
  • Regularly recognised as a Global Elite Thought Leader by Who’s Who Legal.

Jonathan Humphrey  is a Chartered Accountant with over 20 years of experience in forensic accounting. He has been appointed as an expert more than 60 times in commercial and investment treaty cases, dealing with matters of damages and quantum.

I don’t use anyone other than Jonathan as an expert witness in relation to business losses. His reports are comprehensive, technical and written at a very high standard. 

WWL Construction Expert Witnesses 2022

Jonathan has acted as an expert witness in multiple forums, including international arbitration under ICC, ICSID, UNCITRAL, LCIA, SIAC, DIAC and HKIAC rules, court litigation and mediation. He has given oral evidence in commercial and investment treaty cases with disputed values of up to US$1.5 billion and has also delivered concurrent evidence (hot-tubbing).

Jonathan began his career at one of the big four accounting firms where he worked in their forensic accounting group for eight years before working for expert services firms for 12 years. He has experience in Europe, Africa, the Middle East, Asia and Australasia, working in a myriad of sectors, including construction, financial services, IT and telecoms, media, natural resources, oil and gas, power and utilities, pharmaceutical and retail.

Jonathan’s expert commissions cover a range of issues including the quantification of lost profits, business valuations and the assessment of damages relating to class actions, professional negligence, insurance claims, business interruption and post-acquisition disputes. His forensic accounting expertise includes fraud, forensic, intellectual property and regulatory investigations.

Jonathan holds a degree in economics and is a fellow of the Institute of Chartered Accountants in England and Wales. He is regularly recognised by Who’s Who Legal for his experience in the quantum of damages, arbitration, litigation, construction and insurance matters.

Jonathan Humphrey is “an absolute stand out in accounting and financing” for his instrumental input in disputes.

Contact Jonathan
Location Singapore, Sydney, Australia

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