Expert valuation witnesses in the UK – problems and solutions

This paper addresses the performance, training and organisation of expert valuation witnesses in the UK. Previous research, based on analysis of professional negligence cases in the UK courts, had found that expert valuation witnesses do not always perform rationally, for example informing courts that valuations can be undertaken within acceptable tolerances of valuation accuracy, while giving expert evidence that differed by more than these tolerances. There was evidence that, while well aware of their overriding duty to the court or tribunal, expert witnesses were frequently producing client‐biased valuations. Such findings provoked questions as to whether standards would be improved by two recently proposed alterations to current practice: either the introduction of a system of compulsory training and accreditation for such witnesses, or a change from the process by which expert valuation evidence is normally presented (one expert witness for each party to a dispute) to the use of a single expert, appointed either by the parties jointly or by the court. A case analysis is performed and conclusions discussed.