The Expert Reliable Witness

Mark Tottenham is a barrister and mediator. He was the lead author of A Guide to Expert Witness Evidence (Bloomsbury Professional 2019), the leading Irish legal textbook on expert evidence, the Dublin Solicitors’ Bar Association’s Practical Law Book of the Year award, 2020.

He was the founding editor of Decisis.ie, an online publisher of law reports, and Decisis Law Ireland (DLI), a monthly law–reporting journal. He has written for  The Irish Times, Irish Independent, Laffoy’s Irish Conveyancing Precedents, Conveyancing and Property Law Journal, Medico-legal Journal of Ireland, and is the editor of the Irish Tax Reports. He has lectured at the Kings Inns, the Law Society of Ireland, and the school of architecture at the Dublin Institute of Technology (now Technical University, Dublin).

He is a graduate of history from Trinity College Dublin. He formerly worked as a genealogist, and for Hodder Headline publishers in London.

• Types of Expert and Professional Witness


• The Duties of Expert and Professional Witnesses


• Enforcement of Experts’ Duties


• Accepting Instructions


• Factual Investigations


• Conducting Professional Research


• Reaching a Conclusion


• Preparing and Writing an Expert Report


• Communication and Consultation Between the Experts and the Instructing Legal Team


• Meetings With Other Experts


• Pleadings, Affidavits and ‘Scott Schedules’


• Oral Evidence at Hearing


• Alternative Dispute Resolution


• Other Hearings or Inquiries

“All experts whether new to the industry or with over 40 years experience should consider this book essential. … It is a book that will educate and be used as a reference point for many years.” The Expert Witness Journal

“… a welcome and excellent guide to the duties and responsibilities of an expert witness…. I heartily recommend this well written and common-sense book to all professional experts.” Edward Flahavan President of the Association of Consulting Engineers