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Gareth Jenkins gave evidence to the Post Office Horizon IT Inquiry from 25 to 28 June on the expert evidence he provided on the Horizon IT system. Mr Jenkins told the Inquiry that he had been unaware of his duties as an Expert Witness and had not been offered any training to support his role. The EWI offers comprehensive training on the core competencies of an Expert Witness. We urge policy and rule makers, and the judiciary, to consider how to ensure that Expert Witnesses fully understand their duties and know how to apply them.  

An expert must read and engage with any judgments which form part of their instructions. 

An expert report did not address all of the questions posed in the letter of instruction, reformulated other questions, and failed to comply with FPR Part 25 in a number of important ways, while the expert witness's oral evidence failed to provide an impartial expert view. 

An expert is entitled to revise his or her opinion in light of a judge's finding as to what is or is not required in order to comply with particular regulations or equivalent regulatory standards.

The Post Office Horizon IT Inquiry is currently holding the public hearings for its phases 5 and 6, which will include scrutiny of the expert evidence relied on by the Post Office. We are proud that two members of EWI provided excellent, independent expert evidence or expert advice on the Horizon case. Their roles in the case demonstrate how important it is for Expert Witnesses to understand and apply the core competencies of the profession. 

Welcome to Expert Matters, the official podcast of the Expert Witness Institute. Each month, we'll be taking an informed look at the key developments in the world of expert witnesses and expert evidence.

Mr X accepted instructions to provide advice in property valuation despite not being an expert in that field. 

Kallakis v Kallakis [2023] EWHC 2148 (Comm) 

During this year’s EWI Conference on 17 May, Beth Rigby presented a session on the Expert Witness: In Practice. The session featured practical examples of an Expert under cross-examination to illustrate the pitfalls of oral evidence and how to avoid them, before concluding with breakout groups to discuss concerns with, and tips for, cross-examination. We've collated the insigfhtful feedback from these discussions. 

Efstathios Maliakis is senior electrical engineer with 20 years’ experience, including 10 years supervising the construction of power plants. A full time Expert Witness since 2021, he tells us what led him to the profession, why he feels he’s found his perfect match career-wise, and his advice for aspiring Expert Witnesses.

One of the UK’s leading experts in Japanese knotweed, Dr Paul Beckett has been providing Expert Witness services since the early 2000s. He shares his insights into being part of a relatively new area of litigation; what makes a good Expert Witness; and why he approaches court like revising for an exam.