Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

Single joint expert definition

What does Single joint expert mean? An independent expert jointly instructed by opposing parties to give opinion evidence on a disputed technical or valuation issue in court or tribunal proceedings. Common in civil litigation and family cases. The court may direct that evidence be given by a single joint expert (expressly provided for in the Civil Procedure Rules and Family Procedure Rules in England and Wales), with similar practice encouraged in Scotland and Northern Ireland; in Ireland the approach is used by agreement and case management though terminology varies. The expert owes an overriding duty to the court, not to the parties. One report is prepared...

CPR 35 expert reports (England and Wales): preparation, contents, statement of truth, exchange, questions, amendments, privilege and sanctions

Published by a LexisNexis Dispute Resolution expert

Practice notes

This Practice Note explains how to interpret and apply the relevant CPR provisions. You should also look to additional material contained in the court guides—see Court specific guidance below.

Preparation of expert report

This Practice Note proceeds on the footing that permission has been granted to adduce expert evidence, and that a Single joint expert will not prepare or give that evidence. For help on securing permission to adduce expert evidence, see Practice Note: Applying for permission to adduce expert evidence, and for guidance on Single joint experts.

Expert witnesses and those instructing them are expected to have regard to:

all applicable CPR Rules and Practice Directions, particularly CPR 35 and CPR PD 35
the Guidance for the instruction of experts in civil claims (the Guidance)
Practice Direction Pre-action Conduct and Protocols, para 7

For the expert’s duties, see Practice Note: Duties of an expert.

Model form expert reports

The Guidance points experts to model report formats provided by bodies such as:

the Academy of Experts
the Expert Witness Institute
the Ministry of Justice (for a medical report template)

but such documents are...

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Web page updated on 21/05/2026

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