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Resources — Procedural Compliance

Joint Expert Statements & Experts' Meetings

A complete guide to joint expert discussions and joint statements under CrimPR Rule 19.6 and FPR Part 25.16 — covering the without-prejudice rule, agenda preparation, and how to prepare your expert for a court-directed meeting.

Criminal RuleCrimPR 19.6
Family RuleFPR 25.16
Discussion StatusWithout Prejudice
Statement StatusAdmissible Evidence
Two expert witnesses reviewing a joint statement document at a conference table in a London law firm

What Is a Joint Expert Statement?

Definition

A joint expert statement (also called a statement of agreement and disagreement) is a document produced by two or more expert witnesses after a without-prejudice discussion directed by the court. It records the matters on which the experts agree, the matters on which they disagree, and the reasons for any disagreement. In criminal proceedings it is governed by CrimPR Rule 19.6; in family proceedings by FPR Part 25.16. The statement is admissible in evidence and is served on the court and all parties.

The purpose of a joint expert statement is not to resolve the dispute between the parties — that remains for the court. Its purpose is to narrow the issues in dispute by identifying where the experts genuinely agree and where they genuinely disagree, so that the court's time at trial is focused on the real points of contention rather than matters that are not truly in issue. A well-drafted joint statement is one of the most effective tools for efficient case management in expert-heavy proceedings.

The without-prejudice nature of the discussion is critical to this process: it allows experts to speak frankly, to test each other's reasoning, and to narrow their differences without fear that their words will be used against the instructing party at trial. The joint statement itself, however, is not without prejudice — it is a formal document that will be before the court and will form part of the evidence.

Awareness Stage — Quick Answers

Procedural Rules: CrimPR 19.6 and FPR 25.16

Joint expert statements are governed by different procedural rules depending on the type of proceedings. In criminal proceedings, the relevant rule is CrimPR Rule 19.6; in family proceedings, it is FPR Part 25.16. Both frameworks share the same core principles — the without-prejudice discussion, the prohibition on solicitor attendance, and the requirement to record both agreement and disagreement — but there are important procedural differences that practitioners must understand.

CrimPR Rule 19.6
Joint Statements in Criminal Proceedings

Rule 19.6 governs the procedure for joint expert meetings and joint statements in criminal proceedings. Where experts for the prosecution and defence have been instructed on the same issue, the court may direct them to meet — without the presence of the parties or their legal representatives — and produce a joint statement. The statement must identify: (a) the issues on which the experts agree; (b) the issues on which they disagree; and (c) the reasons for any disagreement. It must be signed by both experts and served on the court and all parties. Solicitors must not attempt to influence the content of the joint statement.

Crown CourtMagistrates' CourtWithout PrejudiceSigned by Both Experts

CrimPR 19.6 vs FPR 25.16 — Key Differences

The following table summarises the key differences between the joint expert statement procedures in criminal and family proceedings. Practitioners instructing experts in both types of proceedings should be aware of these distinctions, particularly the different practice directions and the different typical triggers for a joint meeting direction.

AspectCriminal ProceedingsFamily Proceedings
Governing RuleCrimPR Rule 19.6FPR Part 25.16
ProceedingsCrown Court & Magistrates' CourtFamily Court & Family Division
Direction RequiredCourt direction requiredCourt direction required
Solicitor AttendanceProhibitedProhibited
Without-PrejudiceDiscussion only; statement admissibleDiscussion only; statement admissible
Practice DirectionCrimPR Part 19 Practice DirectionPD 25E
Typical TriggerConflicting psychiatric / forensic reportsConflicting parenting capacity or hair strand reports
DeadlineSet by court directionSet by court direction (often pre-IRH)
Experts meeting agenda document alongside CrimPR Rule 19.6 with Areas of Disagreement sticky note

Preparing the Experts' Meeting Agenda

The written agenda is the solicitor's primary tool for ensuring that the experts' meeting addresses the issues the court needs resolved. A well-prepared agenda focuses the experts on the specific questions in dispute, avoids tangential discussion, and helps ensure that the joint statement is structured in a way that is useful to the court.

The agenda should be agreed between the instructing solicitors on both sides where possible, and should be served on the experts in advance of the meeting. It should be structured around the specific questions the court needs answered — not the parties' tactical positions. Agenda items that are framed in a way that pre-determines the answer, or that steer the expert toward a particular position, are improper and may be challenged.

In family proceedings, Practice Direction 25E provides detailed guidance on the preparation of the agenda and the conduct of experts' discussions. Solicitors instructing experts in family proceedings should read PD 25E carefully before preparing the agenda. In criminal proceedings, there is no equivalent practice direction, but the principles are the same: the agenda should be neutral, focused, and agreed where possible.

From Our Work — Non-Commodity Experience

What We See When Joint Meetings Go Wrong

The most common failure mode we encounter is not an expert who refuses to agree — it is an expert who agrees to more than they should because they feel social pressure from a more assertive opposing expert. In our experience managing joint expert meetings across criminal and family proceedings, the most effective preparation is not coaching the expert on what to say, but ensuring they understand that a well-reasoned disagreement is a legitimate and often necessary outcome. An expert who records a genuine disagreement clearly and with reasons is doing their job correctly. An expert who minimises disagreement to avoid conflict is failing the court.

We also regularly see joint statements that record disagreement without reasons — the experts simply note that they disagree on a point without explaining why. This is unhelpful to the court and will often attract judicial criticism. When we brief our experts before a joint meeting, we emphasise that the reasons for disagreement are as important as the disagreement itself, and that a joint statement that explains the competing reasoning is far more valuable than one that merely lists the points of contention.

How to Prepare for a Joint Expert Meeting

Step 1

Obtain and review the court direction

Confirm the court's direction for a joint expert meeting, including the deadline for the joint statement and the specific issues the experts are required to address. Check whether the direction specifies a particular format or requires the agenda to be agreed between solicitors.

Step 2

Serve the opposing expert's report on your expert

Ensure your expert has received the opposing expert's full report, any supplementary materials, and the relevant factual evidence. Your expert cannot engage meaningfully in the joint meeting without a thorough understanding of the opposing position.

Step 3

Prepare and agree the written agenda

Prepare a written agenda of the issues to be addressed, agreed with the opposing solicitor where possible. Structure the agenda around the specific questions the court needs answered. Do not frame agenda items in a way that pre-determines the answer or steers the expert toward a particular position.

Step 4

Brief the expert on process and boundaries

Remind the expert of their overriding duty to the court, the without-prejudice nature of the discussion, and the prohibition on solicitor attendance. Make clear that the joint statement must honestly record both agreement and disagreement, and that any attempt to minimise disagreement artificially will be scrutinised by the court.

Step 5

Review, sign, and serve the joint statement

Review the joint statement for completeness and compliance with the court's direction. Ensure it is signed by both experts. Serve it on the court and all parties within the directed timetable. If your expert has changed their opinion as a result of the meeting, notify the court and all parties immediately under Rule 19.2(6) or FPR Part 25.3.

Related Subtopics

Without-Prejudice Rule
The legal principle that protects the content of experts' discussions from disclosure at trial, allowing frank exchange without tactical risk to the instructing party.
Agreement and Disagreement Schedule
The structured format of a joint statement, recording the issues on which experts agree, the issues on which they disagree, and the reasons for any disagreement.
Scott Schedule
A tabular case management document sometimes used interchangeably with 'joint statement' in criminal proceedings, setting out competing expert positions on a series of issues.
Overriding Duty to the Court
The fundamental obligation under CrimPR Rule 19.2 and FPR Part 25.3 that an expert's primary duty is to assist the court impartially, overriding any duty to the instructing party.
Letter of Instruction
The document sent by the instructing solicitor to the expert setting out the facts, the specific questions to be addressed, and the court timetable — including any direction for a joint meeting.
Practice Direction 25E
The Family Procedure Rules practice direction that provides detailed guidance on the conduct of experts' discussions in family proceedings, including the agenda and joint statement format.
Experts' Meeting Agenda
A written list of issues prepared by the instructing solicitors (agreed where possible) for the experts to address at their without-prejudice meeting.
Range of Opinion
Where there is a body of expert opinion on a matter, the joint statement should record the range of views and the position of each expert within that range, not merely a binary agree/disagree.

Frequently Asked Questions

Related Guides

CrimPR Rule 19 — Expert Witness Duties
The complete guide to CrimPR Part 19 compliance for criminal proceedings.
FPR Part 25 — Expert Evidence in Family Proceedings
The necessity test, single joint experts, and PD 25B requirements.
The Ikarian Reefer Principles
The seven duties of an expert witness as codified by Cresswell J.
Expert Witness Report Writing Standards
Mandatory content requirements and best practice for compliant reports.
Criminal Defence Expert Witnesses
Psychology, psychiatry, forensic, and CCTV experts for criminal proceedings.
Family Law Expert Witnesses
Parenting capacity, hair strand testing, and psychological experts for family courts.

References

Primary Legislation & Rules

CrimPR Rule 19.6 — Joint expert statements in criminal proceedings (SI 2020/759)

FPR Part 25.16 — Experts' discussions in family proceedings (SI 2010/2955)

Practice Direction 25E — Guidance on experts' discussions in family proceedings

Key Case Law

The Ikarian Reefer [1993] 2 Lloyd's Rep 68 — Cresswell J's seven duties of an expert witness

Phillips v Symes [2004] EWHC 2330 (Ch) — Personal costs order against expert for breach of duty

R v Dlugosz [2013] EWCA Crim 2 — Admissibility of expert evidence in criminal proceedings

Professional Guidance

Forensic Science Regulator — FSR-GUI-0029: Guidance on expert witness obligations

Expert Witness Institute — Code of Guidance on Expert Evidence

Law Society — Guidance on instructing experts in family proceedings

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