Jonathan Ellis


Global Elite Thought Leader - Arbitration 2024
Consulting Experts - Financial Advisory and Valuation - Quantum of Damages 2023
Southeast Asia - Arbitration Expert Witnesses 2022
Expert Information
Qualifications MSc Accounting and Management Science
BSc Physics
Professional Memberships FCA, ICAEW, AIEN, FAPIEx
Industries Aerospace and Defence, Buildings, Financial Services, Mining and Metals, Power and Utilities, Production and Manufacturing, Technology, Media and Telecoms, Transportation Infrastructure
Regional Experience Americas, Asia, Europe, Middle East, Oceania
Expert Highlights
  • Widely experienced damages and valuation expert across multiple jurisdictions.
  • Proven as a credible expert witness under cross-examination.
  • Ranked as a Global Elite Thought Leader in Arbitration by Who’s Who Legal.
  • Acts as a tribunal appointed expert and expert determiner.
  • Fellow of the Institute of Chartered Accountants in England and Wales.

Jonathan Ellis is a forensic accountant with nearly two decades of experience. He has been appointed as an expert on more than 25 occasions.

“Jonathan has it all: work ethic, credibility and reliability” “He is very responsive to concerns and strong under cross-examination”

WWL Global Elite Thought Leaders – Arbitration Expert Witnesses 2024

Jonathan has acted as expert on matters before the UK and Singapore High Courts as well as in ad hoc, SIAC, LCIA, ICC, HKIAC, UNCITRAL and ICSID arbitration forums. He has provided oral testimony on numerous occasions, in both court and arbitration, and has been engaged as a tribunal appointed expert.

Jonathan has advised and supported clients in mergers and acquisitions transactions, corporate restructuring, financial reporting, and expert determination. He is experienced across multiple sectors including energy, power, pharmaceutical, mining, and manufacturing. His consulting experience also includes advising two utility suppliers in the Middle East, in respect of both water and power.

Jonathan specialises in the assessment of complex damages and contentious valuations, in particular in the context of disputes, for litigation, arbitration, and expert determination purposes. He is also experienced in conducting independent accounting investigations and reviews.

Jonathan holds a master’s in accounting and management science and is a fellow of the Institute of Chartered Accountants in England and Wales and the Asia Pacific Institute of Experts. He is a member of the Association of International Energy Negotiators and the thought leadership group of the Singapore ICC Arbitration Group.

Jonathan Ellis is a highly rated expert with peers and clients praising his ability to “display exceptional attention to detail and produce carefully prepared and strategically astute work”.

Contact Jonathan
Location: , Singapore

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