Experts and pretenders: Examining possible responses to misconduct by experts in criminal trials in England and Wales.

Much academic literature explores the reliability of expert evidence in criminal proceedings in England and Wales. However, almost no attention has been paid to misconduct by experts giving evidence in criminal cases. Whilst rare, its serious impact on the administration of justice and public trust in it means that this area requires analysis. This article explores possible responses to expert witness misconduct occurring in the context of criminal proceedings in England and Wales, noting particularly the differences in responses available, depending firstly upon whether the expert is a registered professional, and secondly whether the expert has stepped outside of their expertise; did not have relevant expertise at all, or was dishonest. Professional disciplinary procedures focus on 'fitness to practise', and it is argued that this is sufficient where a registered professional has overstepped their expertise, but has not displayed mala fides. On the contrary, where someone gives evidence purporting to have expertise that they do not, or lies about their conduct as an expert in the case, criminal sanctions are available, appropriate, and should be used. These include contempt of court; perverting the course of justice; fraud by false representation, and perjury. [ABSTRACT FROM AUTHOR]