Ask most people what a medico-legal report contains and they will describe a doctor's letter. In practice, it is a far more structured document, built to a legal standard, not a clinical one.

That distinction matters. A report missing a required section, such as a statement of truth or a clear separation of fact from opinion, can be challenged or rejected in proceedings.

In short, a medico-legal report is a formal document prepared by a medical expert that sets out clinical findings, an opinion on causation and prognosis, and a declaration of independence, structured to meet the evidential requirements of the proceedings it supports. This article breaks down that structure section by section, explains the rules that shape it, and covers the different report types you are likely to encounter.

Quick answer: A medico-legal report includes the referral question, records reviewed, clinical history, examination findings, diagnosis and causation opinion, prognosis, recommendations, and a statement of truth confirming the expert's independence under CPR Part 35.

What Is a Medico-Legal Report?

A working definition

A medico-legal report is a written document, prepared by a doctor or another registered health professional, that presents medical evidence for a legal or quasi-legal process. Unlike a clinical letter written for treatment purposes, it is written specifically to answer questions posed by the instructing party or the court.

The person examined is usually described as the claimant, appellant, or patient, depending on the proceedings. The report writer, referred to as the expert witness, owes their primary duty to the court or tribunal, not to whoever instructed them.

Where medico-legal reports are used

Medico-legal reports appear across a range of legal contexts, each with slightly different content expectations.

A GP producing a report for a straightforward whiplash claim and a psychologist producing a report for an asylum case are both writing medico-legal reports, but the depth, structure, and referenced standards differ considerably.

The Standard Structure of a Medico-Legal Report

Most compliant UK medico-legal reports follow a broadly consistent structure, even though exact headings vary between specialisms and instructing organisations.

Instructions and the referral question

The report opens by setting out who instructed the expert, the date of instruction, and the specific questions the expert has been asked to address. This frames everything that follows and shows the report has stayed within its intended scope.

Records reviewed

The expert lists every document considered, medical records, witness statements, prior reports, and any other evidence. This section demonstrates the report is grounded in a documented evidence base rather than the examination alone.

Clinical history and examination findings

This section records what the claimant reported during examination and what the expert observed. Good practice separates the claimant's self-reported history clearly from the expert's own clinical findings.

Diagnosis, causation, and opinion

Here the expert states their diagnosis and gives an opinion on causation, whether the incident or event in question caused, contributed to, or is unrelated to the condition described. Where medical opinion genuinely differs on the point, the report should say so rather than presenting one view as settled fact.

Prognosis and recommendations

The report sets out the expected course of recovery, any anticipated ongoing symptoms, and recommendations such as further treatment, rehabilitation, or additional assessment.

Statement of truth and declaration of independence

Every compliant report closes with a statement of truth, in which the expert confirms the report represents their honest and complete professional opinion, and a declaration confirming their understanding of the duty to the court.

How CPR Part 35 Shapes the Report

Duty to the court, not the instructing party

Civil Procedure Rule 35 governs expert evidence in civil proceedings in England and Wales. Its central principle is that an expert's overriding duty is to the court, regardless of who is paying for the report.

This shapes tone as much as content. A compliant report cannot read as advocacy for the instructing party's position, and must acknowledge any weaknesses or alternative interpretations of the evidence.

Mandatory content requirements

Practice Direction 35 sets out specific content that must appear in an expert report used in civil proceedings, including the expert's qualifications, the substance of any instructions received, and a statement that the expert understands and has complied with their duty to the court. Reports that omit these elements risk being challenged before the substantive medical opinion is even considered.

Types of Medico-Legal Report

Initial versus second or supplementary reports

An initial report addresses the referral questions at the point of first examination. A second or supplementary report is commissioned later, often to address new medical evidence, respond to questions raised by the other party, or assess a claimant's condition once treatment has concluded.

Specialism-specific reports

Report content depth varies significantly by discipline.

• GP reports typically cover general injury, recovery timeline, and straightforward causation questions.
• Orthopaedic reports go into detailed musculoskeletal examination findings and often longer-term functional prognosis.
• Psychological and psychiatric reports assess diagnosis against recognised classification systems, along with capacity, risk, and treatment need.

Timescales and Costs

Turnaround time depends on report complexity, specialism availability, and whether records need to be obtained before the appointment can take place. A straightforward GP report for a minor personal injury claim may take a matter of weeks from instruction to delivery, while a complex clinical negligence report involving multiple specialists can take considerably longer.

Costs vary by specialism, report complexity, and whether the report is an initial or supplementary instruction, and are typically agreed between the instructing party and the reporting organisation ahead of examination.

Benefits and Limitations

Benefits of a well-structured medico-legal report:

• Gives the court or tribunal independent, evidence-based medical opinion
• Provides a clear, documented basis for settlement negotiations
• Reduces the risk of a report being challenged on procedural grounds
• Creates a consistent record that later reports can build on

Limitations to keep in mind:

• A report reflects a single expert's opinion and may be challenged by an opposing expert
• Findings are only as reliable as the records and history available at the time
• Turnaround times can affect case timelines, particularly for complex specialisms
• A report is not a substitute for ongoing clinical treatment

Common Mistakes in Medico-Legal Reports

1.     Blurring fact and opinion. Failing to separate what the claimant reported from what the expert independently observed weakens the report's evidential value.

2.     Omitting the statement of truth. A report without this declaration does not meet CPR Part 35 requirements.

3.     Writing for the instructing party rather than the court. Reports that read as advocacy rather than independent opinion invite challenge.

4.     Incomplete records review. Missing relevant prior medical history can undermine the causation opinion.

5.     Vague prognosis language. Recommendations and expected recovery timelines need to be specific enough to be useful in settlement discussions.

Frequently Asked Questions

Who can write a medico-legal report?

A registered medical professional with relevant clinical expertise and, ideally, experience or training in medico-legal report writing, since the format and evidential requirements differ from routine clinical documentation.

Is a medico-legal report the same as a clinical letter?

No. A clinical letter is written for treatment purposes, while a medico-legal report is written to answer specific legal questions and must meet the structural and independence requirements set out in CPR Part 35.

What happens if a report is challenged?

The instructing party or the other side may request clarification, put written questions to the expert, or in some cases instruct a second expert to provide an alternative opinion.

Does every medico-legal report need to reference CPR Part 35?

Reports used in civil proceedings in England and Wales generally need to comply with CPR Part 35 and its Practice Direction. Reports prepared for other contexts, such as immigration tribunals, follow their own applicable standards, such as the Istanbul Protocol for reports documenting ill treatment.

How is a second report different from the first?

A second report is typically commissioned to consider new evidence, respond to points raised by the other party, or reassess the claimant's condition after further time has passed or treatment has concluded.

Conclusion

A medico-legal report is far more than a medical opinion in letter form. Its structure, from the referral question through to the statement of truth, exists to meet the evidential standards required by the proceedings it supports.

Understanding that structure helps legal professionals brief experts more effectively and helps medical experts produce reports that hold up under scrutiny. The requirements shift slightly by context, but the underlying discipline, separating fact from opinion and maintaining independence, stays constant.