Expert profile

Jonathan Ellis

Partner

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 Lexology Index.
Acts as a tribunal appointed expert and expert determiner.
Fellow of the Institute of Chartered Accountants in England and Wales.

Services

Industries

Jonathan is a measured witness who impresses in the witness box. His reports are carefully drafted and very well thought through.
Lexology Index - Arbitration - Global Elite Thought Leader

Expertise

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 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 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.

Professional recognition

Lexology Index

Arbitration – Global Elite Thought Leader
Consulting – Financial Advisory and Valuation – Quantum of Damages – Global Elite Thought Leader
Commercial Litigation
Southeast Asia – Arbitration

Jonathan Ellis is an “effective expert witness”, thanks to his market-leading advisory and valuation work on financial matters arising from complex transactions, investigations and related disputes.
Lexology Index - Consulting - Financial Advisory and Valuation - Quantum of Damages - Global Elite Thought Leader

Background

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 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.