
The danger in placing too much reliance on the findings of experts is demonstrated in a series of cases in relation to DNA analysis, where there was no other evidence against the accused save the presence of his DNA found at the scene of a crime. It should always be kept in mind that expert evidence is merely one tool to be used in proving a case. The purpose of this Guidance is to assist prosecutors in identifying, understanding and challenging, where appropriate, this type of evidence. Prosecutors will require the appropriate knowledge and understanding of the evidence in question to present and challenge expert evidence. All of the sections need to be read in conjunction with the general principles relating to experts as set out in the guidance.)Įxperts can be of great assistance to Magistrates and juries in aiding them to determine the issues in a case, including the guilt or innocence of an accused. It does not purport to provide an exhaustive list of all the different types of expert evidence.


(Note: Part 2 relates to particular areas of expertise.

Annex A - Letter of Instruction Template.
