There is a reasonable basis for saying that demand for consultant psychiatrist experts is increasing, although the scale should not be overstated. There is no single published national series counting every medico-legal psychiatric instruction. What can be seen is a combination of greater mental-health need, more complicated evidential questions and a limited consultant workforce.
More mental ill-health is being identified.
The background population has changed. NHS England’s Adult Psychiatric Morbidity Survey found that the proportion of 16- to 64-year-olds with a common mental-health condition increased from 18.9% in 2014 to 22.6% in 2023/24. Treatment use among adults with relevant symptoms also increased over the same period.
These are population figures, not statistics about claims. They do mean that more people entering disputes will have a current or previous psychiatric history, medication, therapy or recorded vulnerability.
That history may become relevant after an accident, an alleged clinical failure, workplace stress or another event. The expert may need to decide whether the claimant developed a new disorder, experienced an aggravation of an existing condition or would probably have become unwell in any event.
Greater recognition also matters. Anxiety, travel fear, post-traumatic symptoms and depression are now less likely to remain hidden beneath a physical diagnosis. A claimant whose fracture has healed may remain unable to work because of fear, low mood or trauma-related symptoms. Once those issues are identified, a general physical report may no longer be sufficient.
The questions are becoming more complicated.
A consultant psychiatrist is rarely instructed merely to confirm that somebody feels distressed. The work concerns diagnosis, causation, treatment, prognosis, risk and function. The expert may need to distinguish ordinary distress from a recognised psychiatric disorder, assess the effect of earlier mental illness and consider several competing life events.
Psychiatric evidence may be required in personal injury, clinical negligence, employment, criminal, family, capacity and coronial matters. The precise questions differ, but the same professional discipline is required. The expert must identify what can be supported medically without taking over decisions belonging to others. Official guidance recognises expert evidence across both civil and criminal legal-aid cases, while psychiatric professional guidance covers work in civil, family, criminal and tribunal settings.
Not every psychological issue requires a psychiatrist. A psychologist may be better placed to undertake psychometric testing or provide an opinion within their own specialist field. A general practitioner may adequately address mild, short-lived symptoms within a straightforward claim.
A consultant psychiatrist becomes necessary when diagnosis, medication, risk, a complex psychiatric history or the interaction between mental and physical conditions requires medical psychiatric expertise. Expert evidence must still be restricted to what is reasonably required, so increasing awareness should not become automatic referral.
Demand is meeting a limited workforce.
The supply problem is easier to measure than medico-legal demand. The Royal College of Psychiatrists’ 2025 workforce census recorded 5,193 consultant psychiatrist posts among responding NHS trusts in England. Of these, 748 were vacant and 669 were filled by locums. Once vacant and locum-filled posts were considered together, 27% of consultant posts were not filled by substantive consultants.
This is not a count of psychiatrists available for expert work. It does show pressure upon the same clinical workforce from which experienced experts are drawn. The College reported that one in seven consultant posts was vacant in England and warned that workload pressures were contributing to burnout, reduced hours, early retirement and clinicians changing careers.
Consultants carrying substantial NHS workloads may have limited time for record review, assessment, supplementary questions, expert discussions and attendance at hearings. The resulting difficulty is familiar to instructing parties: long waiting periods, restricted availability and problems locating an expert with the required subspecialty.
General adult, child and adolescent, old-age, forensic and liaison psychiatry are not interchangeable simply because each practitioner is a psychiatrist. A shortage can create pressure to instruct whoever is available rather than whoever is appropriate.
Consultant status is not enough.
Being a consultant does not automatically make somebody an effective expert witness. Clinical practice asks the psychiatrist to diagnose and treat a patient. Expert work requires a different discipline. The doctor must assess information from several sources, distinguish facts from assumptions, address evidence that weakens the opinion and write for readers who may have no psychiatric training.
The GMC requires medical experts to remain within their professional competence, provide objective evidence and make clear the limits of their knowledge. The Royal College advises psychiatrists to obtain appropriate training before entering medico-legal practice because legal proceedings present duties and procedural risks that may be unfamiliar from ordinary clinical work.
Growing demand may tempt clinicians to enter the field after minimal preparation. That is not a workforce solution. A poorly reasoned psychiatric report can increase delay by prompting written questions, further evidence or a replacement assessment.
Capacity should be developed through suitable training, supervision, peer review and realistic workloads. Experts also need reliable systems for secure record handling, conflict checks, version control and timely communication.
Instructions must become more disciplined.
Scarcity makes poorly framed instructions especially wasteful. A letter requesting “a full psychiatric report” without identifying the disputed issues may produce unnecessary work or an opinion that does not answer the real question. Relevant GP records, earlier psychiatric notes, treatment material and employment evidence should be supplied where they affect the history.
The instruction should explain whether the expert is being asked about diagnosis, causation, prognosis, capacity, risk or treatment. It should identify any competing factual accounts and avoid asking the psychiatrist to decide issues outside medical expertise.
A consultant psychiatrist should not be commissioned merely because psychological language appears in the records. The proposed evidence should be proportionate, and the expert should have the correct subspecialty and current clinical experience for the case. Experts must provide independent opinions within their field and consider all material facts, including those that may detract from their conclusions.
Demand for consultant psychiatrist experts is likely to remain strong because psychiatric evidence now arises within a wider range of disputes and the underlying questions are often complex. Yet the phrase “growing demand” tells only half the story, the sharper problem is that more work is reaching a workforce already under pressure.
The answer is not to lower the threshold for expert practice or treat every consultant as interchangeable. It is to identify psychiatric issues earlier, instruct the right expert on focused questions and allow enough time for a properly reasoned opinion.
A psychiatric report is most valuable when it clarifies complexity. Producing more reports will achieve little if there are too few suitably trained experts available to write them well.
