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Forensic & Expert Witness Conference 2026

Wednesday 18 November, Virtual Event

A day for UK forensic accountants and expert witnesses to unpack current trends affecting the community, hear essential updates from field experts and discuss lessons learned from recent cases.

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Highlights

Sessions will cover a range of practical and technical issues to keep you at the top of your field, enabling you to provide your clients with solutions to the challenges in this ever-changing sector.
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Real life examples

Hear from Lord Evans of Weardale KCB DL, former Director General of the British Security Service (MI5)

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Expert determination in peril

Explore a landmark ruling on “manifest error” and understand what it means for parties relying on expert determination in high-stakes disputes.

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Legal update

Explore recent developments in both civil and criminal law, including impacts on expert witnesses and significant legislative changes.

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Part 25 questions and cross examination in Court

Practical advice on how to respond to Part 25 questions that may be strategic, or extend beyond clarification, and what an expert should expect in Court.

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CPD

Earn up to 4.25 hours of verifiable CPD by attending this event.

Programme

Please note the programme is subject to change.

Morning sessions

Chair’s welcome and opening remarks
Phil Southall, Chair of the ICAEW Forensic & Expert Witness Community, Head of Forensic Services, Ellacotts
09:30
Keynote address
Lord Evans, former Director General of MI5, will be sharing his experiences and insights from a 33-year career at the forefront of national security. He will be discussing what it was like to work for and lead MI5 as well as his later work as a board member at HSBC, as chair of the public interest committee at KPMG UK and as chair of the committee on standards in public life. 
09:35
Legal update: civil
Rowena Lewis, Partner at Clyde & Co, will explore the current litigation landscape and recent cases impacting the role of expert witnesses.
10:20
Break
11:00
On the tools: The use of, and perspectives on, AI in business valuations
In this session, delegates will hear a discussion on the use of AI in business valuations from Thomas Rodwell, business valuation expert and Managing Director at RDA, and Aleisha Murray, Chief of Staff at Mltpl, an AI enabled business valuation platform. Tom and Aleisha will set out their alternative, and sometimes competing, perspectives on the issues facing the profession, including how experts should be approaching the use of AI in their reports, and the increasing adoption of AI by both valuation practices and clients alike.
11:15
Legal update: criminal
Eve Giles, Partner at A&O Shearman, will discuss key cases and legislation updates relevant for experts in criminal cases, including the new Economic Crime Act.
12:00
Lunch
12:40

Afternoon sessions

"Questions, questions!" - Dealing with Part 25 questions to experts and cross examination in Court.
This session explores the key legal and practical considerations for expert witnesses involved in court proceedings. Attendees will gain insight into what to expect when giving evidence, including cross-examination, the duties experts owe to the court, and the importance of the statement of truth. The session will also examine the strategic use of Part 25 questions to test and refine expert opinion, narrow areas of dispute, and support effective cross-examination, alongside practical guidance for experts responding to questions that extend beyond clarification.
13:40
Using Investigators Effectively in Disputes: Lessons from Cross-Border Cases
How and when should investigators be used in contentious matters? Drawing on experience from complex cross-border disputes, Austen will explore where investigative support adds the greatest value, the common pitfalls that can undermine an engagement, and the practical steps counsel can take to maximise the strategic and evidential value of investigative work.
14:25
Break
15:05
Expert determination in peril
In the recently reported case of Hamid Nawaz-Khan & Ors v UAP Limited, the Judge found that an expert’s determination was subject to “manifest error” and overturned his decision. However, arguably, the expert had simply applied the sale and purchase agreement as drafted and agreed between two sophisticated parties. Does this Judgment in fact expand the scope for arguments over whether an expert determination can be set aside for manifest error? Can a determining expert rely on the wording of the SPA as drafted? Will the expert need to get legal opinion on construction in all cases? Geoff Mesher, an expert witness in the Court case, will be joined by other experts to discuss the case and its ramifications.
15:20
Closing Remarks
Phil Southall, Chair of the ICAEW Forensic & Expert Witness Community, Head of Forensic Services, Ellacotts
16:20

Conference Chairs

Phil Southall
Phil Southall Head of Forensic Services, Ellacotts

Phil has specialised in forensic services since qualifying as a Chartered Accountant in 1999. He is instructed as an expert or advisor across a broad spectrum of cases, including shareholder disputes, matrimonial disputes, breach of warranty claims and completion account disputes, contractual or commercial disputes, professional negligence claims, business interruption claims and fraud investigations.

Our Speakers

Jonathan Evans
Lord Evans of Weardale KCB DL Former Director General of the British Security Service (MI5)

Jonathan Evans was Director General of the British Security Service (MI5) from 2007-13. As head of MI5 he was one of the British Government's principal advisors on national security threats including terrorism, cyber security and espionage and was a member of the prime minister's National Security Council. Since leaving MI5, Jonathan has been a non-executive director of HSBC Holdings and chaired the Public Interest Committee of KPMG UK until March 2026. He is a director of Ark Datacentres Ltd and an advisor to several smaller technology companies. From 2018 to 2023 he was Chair of the Committee on Standards in Public Life. Jonathan sits as a Crossbencher in the House of Lords. He is currently Chair of the HALO Trust, the global mine action charity, and a Deputy Lieutenant in Kent. He is a Visiting Professor at Kings College London.

eve giles
Eve Giles Partner, UK Head of Investigations & White-Collar, A&O Shearman

Eve is a leading white collar crime specialist. She has acted in a number of high-profile trials brought by the SFO, FCA and CPS and acts for both individuals and domestic and multinational corporations in a broad range of sectors, including criminal investigations into bribery, money laundering, fraud, cartels and financial services offences. She regularly advises in cross border investigations.

Mark Hands headshot
Mark Hands Partner and Head of Family Law, Lodders

Mark Hands is a Partner and Head of Family Law at Lodders, recognised as one of the UK's leading family lawyers. He advises on complex divorce and financial remedy disputes, including cases involving businesses, international assets, trusts and HNW individuals. Ranked Band 1 by Chambers & Partners and a Leading Partner in The Legal 500, he is known for his strategic advice and strong client focus. Mark is also a Fellow of the International Academy of Family Lawyers, reflecting his expertise in cross border family law matters.

Austen Josephs
Austen Josephs Founding Partner, Lamplighter Group

Austen Josephs is a founding partner at Lamplighter Group, specialising in investigations, strategic intelligence and dispute support. With more than 15 years' experience leading complex cross-border investigations, Austen has supported litigation, arbitration and asset tracing matters across Europe, the Middle East and Africa. Previously, he was part of the founding team of Dentons Global Advisors' business intelligence practice, following a decade at Alaco Limited, where he led the firm's Middle East practice.

rowena lewis
Rowena Lewis Partner, Clyde & Co

Rowena is a partner in the Professional and Financial Disputes team at Clyde & Co. She specialises in acting for accountancy firms and their partners, both in relation to the defence of high value and complex professional negligence claims, as well as representing them in regulatory investigations and disciplinary proceedings. She has been involved in some of the most high profile FRC audit investigations and audit claims over the past decade.

Geoff Mesher
Geoff Mesher Managing Partner, Tempest Forensic Accounting

Geoff is an experienced forensic accountant. He worked for KPMG for 17 years and also spent 2½ years as a Forensic Partner with Grant Thornton. He formed Tempest Forensic Accounting UK LLP with Caroline and Karen in March 2013. Geoff carries out forensic accounting and investigation work. He has produced many expert reports and worked on numerous loss of profit and valuation engagements arising from a wide range of commercial, matrimonial and other disputes. He has also acted as expert in criminal matters relating to fraud. He is also particularly experienced in the quantification of warranty and indemnity insurance claims as well as other transaction disputes with respect to warranty claims, completion accounts and earn outs, also carrying out expert determinations in this field. He is a Member of the Academy of Experts and a Certified Fraud Examiner with the Association of Certified Fraud Examiners.

Jonathan Nosworthy headshot
Jonathan Nosworthy Head of the Family Finance Team, St Philips Barristers

Jonathan is ranked in Band One in Chambers and Partners and Legal 500 as a specialist financial remedy practitioner. He provides advice and representation in cases involving all aspects of the financial consequences of marriage, civil partnership and other domestic relationship breakdown.

Speaker: Thomas Rodwell
Thomas Rodwell Managing Director, Rodwell Disputes Advisory

Thomas Rodwell is a Chartered Accountant and a leading business valuation and damages expert. He sits as Chairman of the ICAEW’s valuation advisory committee and is recognised in Band 1 of Chambers and Partners (UK, Forensic Accountants). He is frequently instructed in large, high profile disputes that require expert evidence in respect of contentious valuations of shareholdings, businesses, lost profits, and other financial interests.

In partnership with

ICAEW works with world-companies that support the finance profession in partnership to bring you the best events possible.

Logo of Business Valuation Benchmarks an ICAEW partner
Business Valuation Benchmarks

Aims to overcome the inherent problem of the unreliable transaction multiples from databases, and equip financial professionals with reliable transaction multiples and insights.

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Supported by

Logo of ICAEW partner The Academy of Experts
The Academy of Experts

The Academy is the professional society and accrediting body for expert witnesses of all disciplines. It is independently run by experts for experts and those using them.

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Testimonials

If you have any interest in this subject, I highly recommend the conference. With the range of speakers there is definitely going to be something of use for everyone. Every time I have attended, I have come away with a number of new resources and additional knowledge.

ICAEW Forensic & Expert Witness Conference delegate 2025

The conference was very professionally run, covered all of the areas necessary for my role and the speakers were all very engaging.

ICAEW Forensic & Expert Witness Conference delegate 2024

A very formative event covering a lot of topics.

ICAEW Forensic & Expert Witness Conference delegate 2025

Another very useful and informative event from ICAEW

ICAEW Forensic & Expert Witness Conference delegate 2024

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