# The Criminal Procedure Rules 2025, Rule 19.4: Content of expert’s report

Extent: E+W

Where rule 19.3(3) applies, an expert’s report must—
(a) give details of the expert’s qualifications, relevant experience and accreditation;
(b) give details of any literature or other information which the expert has relied on in making the report;
(c) contain a statement setting out the substance of all facts given to the expert which are material to the opinions expressed in the report, or upon which those opinions are based;
(d) make clear which of the facts stated in the report are within the expert’s own knowledge;
(e) where the expert has based an opinion or inference on a representation of fact or opinion made by another person for the purposes of criminal proceedings (for example, as to the outcome of an examination, measurement, test or experiment)—
(i) identify the person who made that representation to the expert,
(ii) give the qualifications, relevant experience and any accreditation of that person, and
(iii) certify that that person had personal knowledge of the matters stated in that representation;
(f) where there is a range of opinion on the matters dealt with in the report—
(i) summarise the range of opinion, and
(ii) give reasons for the expert’s own opinion;
(g) if the expert is not able to give an opinion without qualification, state the qualification;
(h) include such information as the court may need to decide whether the expert’s opinion is sufficiently reliable to be admissible as evidence;
(i) contain a summary of the conclusions reached;
(j) contain a statement that the expert understands an expert’s duty to the court, and has complied and will continue to comply with that duty; and
(k) contain the same declaration of truth as a witness statement.
[Note. Part 16 contains rules about written witness statements. Declarations of truth in witness statements are required by section 9 of the Criminal Justice Act 1967.]

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Source: https://www.legislation.gov.uk/uksi/2025/909/rule/19.4 (the official version)
Page: https://openlegislation.uk/criminal-procedure-rules-2025/rule-19.4/enacted
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.