Roger Isaacs

Forensic Partner


  • Forensic accountancy
  • Mediation
  • Strategic advice
  • Business turnaround

Contact details:

Bristol London Taunton Yeovil
0117 945 2500

Roger Isaacs is licensed as an insolvency practitioner in the UK by the Institute of Chartered Accountants in England and Wales.

Roger is a hugely experienced and highly regarded forensic accountant and expert witness.

He is the National Technical Director of the Network of Independent Forensic Accountants (“NIFA”) and has provided expert evidence on several hundred occasions. Although his evidence is most often presented by way of a written report, Roger is no stranger to cross-examination having testified in the County Court, the High Court, and the Magistrates Court, as well as in the International Court of Arbitration, the Employment Tribunal and the Lands Tribunal. Roger has also given evidence concurrently by means of so-called “Hot-tubbing” or witness conferencing. Through his work with the legal profession, he has also become a member of Resolution and was a member of the Expert Witness Institute.

In addition to his day to day role advising clients, Roger lectures widely on a variety of accountancy related topics including Business Valuation, Strategic Planning and Directors’ Duties. He is also a prolific author of accountancy articles, which have been published both in the technical press and more widely. He is regularly interviewed by journalists for the BBC and the National Press and has appeared on both National TV and Radio as well has having been a visiting Forensic Studies university lecturer at the Shrivenham Defence Academy.

As a qualified mediator, Roger assists businesses to resolve conflicts without recourse to the court but he is also regularly asked to provide expert accountancy opinion in relation to court proceedings. In 2010, he became one of the first people in the country to qualify for the Forensic Accountants Accreditation from the ICAEW, in recognition of his knowledge and experience, which covers a diverse range of legal sectors from divorce and shareholder disputes to fraud cases and loss of earnings calculations.

He sits on the panel of the President of the ICAEW for appointments to resolve disputes by means of Expert Determination and is Former Chair of the ICAEW Forensic Advisory Committee. He is treasurer and a committee member of the Association of South West Mediators and is an accredited member of the Academy of Experts.

Roger is also Co-Chairman of MGI Worldwide – a top 20 ranked global accounting network with global revenues approaching a billion dollars across firms in 100 countries around the world.

As a licensed insolvency practitioner, although he no longer takes appointments, for many years Roger advised businesses that were in financial difficulty and, in some cases, has had to put to the test the commercial advice that he gives to his clients, when at the helm of companies that he traded in his capacity as Administrator. He also has considerable experience of acting as liquidator of solvent companies and has acted in relation to multi-million-pound tax-driven group reorganisations.

Finally, Roger is a trustee of a number of charities including St Peter’s Hospice.

Listen to my latest podcast: Spotting the signs of cybercrime

In this episode, Roger Isaacs, our Forensic Partner, joins Ross Jones, Senior Marketing Manager, to discuss fraud, with a particular focus on cybercrime.

With a rise in cybercrime cases in recent years, Roger gives us an insight into how it can affect individuals and businesses.


Roger Isaacs’ forensic accounting advice was instrumental in quashing a vexatious claim brought against us and we cannot thank him enough. We highly recommend Roger for his phenomenal accounting expertise, his ability to provide clarity to complex situations and provide clear, well evidenced reports, and on top of that he is a really lovely person.

Mr and Mrs Gibbs

Roger takes a no nonsense, practical approach to expert valuation work and I have always regarded him as a safe pair of hands.

Jos Moule
Veale Wasbrough Vizards

I found Roger to be extremely responsive and helpful in dealing with a matter for me at short notice.

Haema Sundram
CG Family Law

I have worked with Roger Isaacs for many years and value enormously his professional expertise on commercial issues.

Jon Toogood
Royds Withy King

Roger Isaacs’ expert forensic accounting advice and reporting is absolutely first class … clear, trenchant and comprehensive.

Andrew Marsden

Roger Isaacs is without doubt the go to person for swift expert and sound guidance and advice in matrimonial matters.

John Brownrigg
Stone King

Roger Isaacs is my first port of call for no nonsense, commercial accountancy evidence.

Richard Gore
Gregg Latchams Limited

Roger’s expert input is always appreciated.

Giles Hindle
DAC Beachcroft LLP

Roger’s keen analysis of a dispute allows him to see through to the heart of the issues. His calm and straightforward approach builds trust quickly and aids settlement.

Anna Phillips
Property Litigation, Foot Anstey

Roger and his team were extremely professional but friendly and approachable throughout.

Ceri-Ann Taylor
Foot Anstey LLP

Roger is extremely knowledgeable and is fantastic with clients.

Lucy Mills
Gregg Latchams Limited

Roger Isaacs is a highly competent expert forensic accountant.

Jeremy Newman
Plexus Law