A good medico-legal report must contain enough information to explain and support the expert’s opinion. It does not improve merely because more material has been included. The test is whether each section helps the court understand the evidence and resolve the issues on which expert assistance is required.
The report is not a substitute for the records.
One of the commonest causes of unnecessary length is the attempt to reproduce the medical records almost in full. A chronology may be necessary, particularly where the claimant has a long treatment history or the timing of symptoms is disputed. That does not require every routine consultation to be summarised. An entry about an unrelated infection or repeat prescription may add nothing to the questions of diagnosis, causation or prognosis.
The expert should select the records that have clinical or evidential significance. These may include the first presentation following the event, previous similar symptoms, relevant treatment, periods of improvement and entries that contradict the claimant’s account. Selection does not mean concealing inconvenient material. Practice Direction 35 requires experts to consider all material facts, including those that may detract from their opinions. The task is to include relevant adverse evidence, not every fact appearing in the bundle.
A report that copies the records without analysis transfers the work of interpretation to the reader. The expert has not been instructed merely to prove that the documents were opened.
Repetition is not corroboration.
Long reports frequently repeat the same history under several headings.
The accident circumstances appear in the claimant’s account, the documentary chronology, the causation section and the final summary. Symptoms are described in the history, examination, diagnosis and prognosis using slightly different wording each time and repeating an allegation does not strengthen the evidence supporting it. It may instead blur the distinction between what the claimant reported, what the records document and what the expert independently concludes.
The report should make those sources clear. For example: “The claimant reports that neck pain began immediately after the collision. The first recorded complaint appears three weeks later.” That sentence does more work than several pages in which the claimant’s account and the documentary evidence are recited separately without comparison.
The GMC requires expert reports to be accurate and not misleading, to include relevant information and to distinguish factual evidence from professional opinion. It also advises medical professionals to use language that can be understood by readers without medical training wherever this can be done without misleading them.
Clarity is not achieved by saying everything twice.
The reasoning matters more than the volume.
A detailed history cannot compensate for an unexplained conclusion.
An expert may spend 30 pages describing consultations and then state: “In my opinion, the claimant’s symptoms were caused by the accident.”
The court still needs to know why. Was the onset consistent with the alleged mechanism? Were there previous symptoms? Did the condition follow an expected clinical course? Is there another event or diagnosis that provides a better explanation? The opinion section should show the reasoning that connects the evidence to the conclusion. It should identify the facts and assumptions relied upon, address relevant alternative explanations and explain any uncertainty.
Practice Direction 35 requires expert evidence to be independent, objective and confined to matters within the expert’s field. Experts must also say when they cannot reach a definite opinion because the available information is insufficient.
A short, transparent chain of reasoning is usually more useful than a lengthy conclusion filled with technical terminology.
Standard wording can become dead weight.
Some material must appear in every compliant report. The expert’s qualifications, instructions, declarations and statement of truth have procedural importance. CPR Part 35 requires the report to state the substance of the material instructions and to include confirmation that the expert understands and has complied with the duty to the court.
The difficulty begins when standard material expands beyond its purpose.
Reports sometimes contain pages explaining the civil burden of proof, reproducing CPR Part 35 or describing the expert’s general approach to every type of injury. Lengthy definitions of common medical terms may be inserted whether or not those terms are disputed. A judge or solicitor does not usually need a lecture on the expert witness system inside each report. Nor should a standard paragraph be included simply because it appeared in the expert’s previous template.
The expert should ask what the reader needs in this case. A rare diagnosis may require explanation. A familiar soft-tissue injury usually does not require several paragraphs of anatomy copied from a textbook.
More pages create more opportunities for error.
Every additional factual statement creates another proposition that may need to be defended. An overlong chronology may contain an incorrect date, attribute an entry to the wrong clinician or describe an allegation as an established diagnosis. Repeated summaries may conflict with one another. Standard text may refer to the wrong body part, gender or accident type because it was carried over from another report.
These may appear minor, but they affect confidence. Once an expert accepts that sections were copied without adequate attention, the opposing barrister may reasonably ask what else was not checked. The GMC requires medical professionals to take reasonable steps to verify the accuracy of reports and include all relevant information. That responsibility applies to every page the expert signs, including lengthy passages generated from templates, administrative support or software.
More content demands more checking. It does not automatically produce more value.
A long report can still be justified.
Brevity should not become another rigid rule, clinical negligence claims involving several years of treatment, disputed professional standards and multiple possible causes may require a substantial report. A complex psychiatric claim may need detailed consideration of previous episodes, later life events, treatment records and competing diagnoses.
The appropriate length depends upon the issues.
The Civil Procedure Rules permit expert evidence only with the court’s permission, and that permission may identify the specific field and issues the expert should address. In lower-value claims, expert evidence will normally be restricted further, often to one expert on a particular issue. The report should reflect the scope of that permission and the complexity of the questions. It should not expand merely because the bundle is large.
A long report is justified when the analysis requires length. It is not justified when length results from copying, repetition or failure to decide what matters.
What should remain after editing?
A properly edited report should allow the reader to identify without difficulty the expert’s relevant qualifications and instructions, the factual and documentary basis of the opinion, the claimant’s account and any material inconsistencies, the clinical findings, diagnosis, reasoning on causation, prognosis and treatment recommendations. It should also make clear any limitations in the available evidence and include the expert’s required declarations.
These elements need not occupy the same number of pages in every case. A straightforward claim may require only a concise explanation. A difficult case may need much more. The final editing question is not, “Can I make this report shorter?” It is, “Would removing this passage prevent the reader from understanding or testing my opinion?”
If the answer is no, the passage may not belong there. The expert’s authority does not come from the weight of the document. It comes from independent judgement, accurate evidence and reasoning that can withstand examination.
A report should be long enough to answer the questions properly, but disciplined enough to stop when it has done so.
