{
  "url": "https://openlegislation.uk/criminal-procedure-rules-2025/rule-19.4",
  "json_url": "https://openlegislation.uk/criminal-procedure-rules-2025/rule-19.4.json",
  "legislation": "uksi/2025/909",
  "legislation_title": "The Criminal Procedure Rules 2025",
  "legislation_url": "https://openlegislation.uk/criminal-procedure-rules-2025",
  "path": "rule/19.4",
  "kind": "rule",
  "number": "19.4",
  "heading": "Content of expert’s report",
  "text": "Where rule 19.3(3) applies, an expert’s report must—\n(a) give details of the expert’s qualifications, relevant experience and accreditation;\n(b) give details of any literature or other information which the expert has relied on in making the report;\n(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;\n(d) make clear which of the facts stated in the report are within the expert’s own knowledge;\n(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)—\n(i) identify the person who made that representation to the expert,\n(ii) give the qualifications, relevant experience and any accreditation of that person, and\n(iii) certify that that person had personal knowledge of the matters stated in that representation;\n(f) where there is a range of opinion on the matters dealt with in the report—\n(i) summarise the range of opinion, and\n(ii) give reasons for the expert’s own opinion;\n(g) if the expert is not able to give an opinion without qualification, state the qualification;\n(h) include such information as the court may need to decide whether the expert’s opinion is sufficiently reliable to be admissible as evidence;\n(i) contain a summary of the conclusions reached;\n(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\n(k) contain the same declaration of truth as a witness statement.\n[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.]",
  "extent": "E+W",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Rule 19.4 in force at 6.10.2025, see Preamble"
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "1967 c. 80; section 9 was amended by section 56 of, and paragraph 49 of Schedule 8 to, the Courts Act 1971 (c. 23), section 168 of, and paragraph 6 of Schedule 9 to, the Criminal Justice and Public Order Act 1994 (c. 33), section 69 of the Criminal Procedure and Investigations Act 1996 (c. 25), regulation 9 of, and paragraph 4 of Schedule 5 to, S.I. 2001/1090, paragraph 43 of Schedule 3 and Part 4 of Schedule 37 to the Criminal Justice Act 2003 (c. 44), section 26 of, and paragraph 7 of Schedule 2 to, the Armed Forces Act 2011 (c. 18) and section 80 of the Deregulation Act 2015 (c. 20). It is further amended by section 72 of, and paragraph 55 of Schedule 5 to, the Children and Young Persons Act 1969 (c. 54) and section 65 of, and paragraph 1 of Schedule 4 to, the Courts Act 2003 (c. 39), with effect from dates to be appointed."
    }
  ],
  "outstanding_effects": [
    {
      "type": "word inserted",
      "affecting": "uksi/2026/721",
      "affecting_title": "The Criminal Procedure (Amendment) (No. 2) Rules 2026"
    },
    {
      "type": "word omitted",
      "affecting": "uksi/2026/721",
      "affecting_title": "The Criminal Procedure (Amendment) (No. 2) Rules 2026"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2025/909/rule/19.4",
    "retrieved_at": "2026-10-28T21:12:44.140935+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}