For experienced General Practitioners, expert witness work can offer an intellectually stimulating opportunity to use clinical experience in a different way. However, becoming a GP expert witness involves considerably more than transferring clinical knowledge into a written report. A GP expert needs to understand the clinical and legal context in which primary care decisions are made, the legal framework governing expert evidence, the practical demands of medico-legal work, and how to undertake this role alongside an existing clinical career.
There are several issues that GPs considering expert witness work should think about from the outset
1. A Wide Clinical Spectrum: The Breadth and Diversity of GP Expert Work
One of the first considerations for a GP entering expert witness work is to appreciate the breadth of clinical issues that can give rise to a claim in primary care. Unlike many areas of medicine, general practice encompasses an exceptionally wide range of presentations, often at an early and undifferentiated stage.
These may involve delayed or missed diagnosis, including cancer and sepsis, prescribing errors, abnormal results, inadequate follow-up or safety-netting, referral issues, chronic disease management, infections, red-flag symptoms, and communication between primary and secondary care.
Increasingly, instructions also arise from remote and urgent care, including telephone and online consultations, NHS 111 and out-of-hours services, where issues such as clinical assessment, triage and safety-netting may be central.
The expert must consider whether the care was reasonable in the circumstances and consistent with the applicable standard of care at the time. This requires an objective assessment of the information available to the clinician and the decisions made, without judging the care retrospectively simply because the outcome was
2. Keep Your Finger on the Pulse of General Practice
A GP expert needs more than knowledge of guidelines; they need a current understanding of how primary care is actually delivered, including short consultations, competing priorities, incomplete information, remote consultations and evolving referral pathways.
For this reason, remaining clinically active is important. Continuing frontline practice keeps the expert’s knowledge current and provides a practical understanding of the pressures, limitations and decision-making realities faced by GPs today.
Keeping your finger on the pulse of contemporary general practice helps ensure that expert opinions remain clinically credible, relevant and grounded in real-world practice.
3. Know Your Expertise—and Know Where It Ends
Being a GP expert does not mean being an expert in everything. General Practice covers an exceptionally broad range of clinical problems, but there will inevitably be areas where specialist expertise is required.
A GP expert may be ideally placed to assess the primary care decision-making and standard of care in a case, while recognising when an issue falls outside their own expertise and requires specialist evidence.
Knowing when to say “this is outside my expertise” is a strength, not a weakness. An expert who clearly understands and respects the boundaries of their competence demonstrates the independence, objectivity and professional integrity expected of an expert witness.
4. Obtain Expert Witness Training—and Understand the Relevant Legal Tests
Expert evidence is a distinct professional role, with duties that extend beyond clinical knowledge. Formal expert witness training is therefore invaluable in understanding the legal framework, report writing, disclosure and evidence, conflicts of interest, the distinction between fact and opinion, and the duties involved when giving oral evidence and facing cross-examination.
A GP expert should also have a sound understanding of the legal principles governing clinical negligence. In particular, Bolam and Bolitho in England and Wales, and Hunter v Handley in Scotland, provide important foundations when considering whether clinical management was consistent with a responsible body of professional opinion and whether that opinion can withstand logical analysis. You can find information about the differences between Hunter v Handley and Bolam here under the heading “legal tests”.
The expert’s role is not to defend a clinician’s decision simply because it represents an approach they might personally have taken. Equally, the expert should not criticise care merely because another approach was available. The opinion must be independent, evidence-based and anchored to the applicable legal test.
Where the case concerns consent, the principles established in Montgomery are also highly relevant. Understanding these principles helps the GP expert move beyond clinical commentary and provide an opinion that is both clinically robust and legally defensible.
5. Learn to Read a GP Record as an Expert
GP records are often central to negligence claims and may include consultations, results, referrals, correspondence, telephone calls, eConsults and NHS 111 records.
The GP expert must distinguish what the records establish from what is inferred. Missing documentation does not necessarily mean something did not happen, but may still have evidential significance. A disciplined approach is essential: assess the records in context and avoid filling gaps in the evidence with assumptions.
6. Consider How Expert Work Will Fit Around Clinical Practice
For many GPs, expert witness work initially sits alongside clinical practice and requires realistic planning. Even a straightforward report can involve substantial time for record review, research, drafting, checking and correspondence, with more complex cases requiring considerably more.
GPs should consider how many cases they can undertake without compromising their clinical work or the quality of their reports. They should also allow for conferences, clarification questions and potential court attendance. Starting with a manageable caseload can help develop an efficient system before taking on more work.
7. Consider What to Disclose to Your Employer and Colleagues
GPs should consider whether any case involves their employer, colleagues, patients or an organisation with which they have a professional connection, and declare any actual or potential conflict of interest.
Confidentiality is equally important. Expert work involves handling sensitive medical and legal information, requiring secure systems for storing records and communicating with solicitors.
Before starting, check any contractual requirements, professional obligations and professional indemnity arrangements covering expert witness work.
8. Understand MROs, Agencies and Expert Panels
New GP experts may receive opportunities through medical reporting organisations (MROs), expert witness agencies and established expert panels. These can be a useful route to securing instructions, particularly when starting out, and may reduce the need for extensive direct marketing.
However, panel arrangements can vary considerably. They may involve fixed fees, contractual terms, administrative requirements and less direct contact with instructing solicitors. Some experts may therefore prefer to develop direct relationships with law firms, while others choose to combine both approaches.
Before joining a panel or agency, it is important to understand who is instructing you, how fees are determined, what administrative or quality requirements apply, and what obligations you are taking on. The right arrangement should provide a sustainable source of work while remaining commercially and professionally worthwhile.
9. Develop a Robust System for Reports and Records
A robust and consistent system for managing instructions, records and reports is essential from the outset. GP experts should keep clear records of the instructions received, documentation reviewed, relevant clinical guidance, time spent, correspondence, deadlines and invoicing.
Reports should be structured carefully, distinguishing the factual evidence, matters within the expert’s knowledge, clinical reasoning and independent opinion. The expert should remain within their area of expertise, identify the evidential basis for their conclusions and clearly explain any assumptions or limitations.
This becomes particularly important in complex cases involving large medical records and lengthy chronologies. A systematic approach not only improves the quality and clarity of the report, but also supports the expert’s duties of independence, transparency and compliance with CPR Part 35.
10. Protect Your Professional Position
Before accepting instructions, GPs should ensure that they have appropriate professional indemnity arrangements for expert witness work.
They should also consider confidentiality, data protection, secure document storage and appropriate communication systems.
Conflicts of interest should be identified at the outset. A GP should not accept an instruction where a conflict could compromise, or reasonably appear to compromise, their independence.
11. Build a Reputation for Independence and Reliability
For a new expert, clinical expertise is only part of the equation. Solicitors need experts who provide balanced opinions, communicate clearly, respond within reasonable timescales and produce reports that are well structured and understandable.
An expert should also be prepared to provide an opinion that is unhelpful to the party who instructed them if that is what the evidence supports. Over time, reputation is likely to be built through the quality and reliability of the expert's work rather than simply through the number of cases undertaken.
Final Thoughts
Expert witness work offers GPs an opportunity to apply their clinical experience in a new and intellectually challenging setting. However, it requires more than medical knowledge: experts must understand the legal framework, analyse evidence carefully, communicate clearly and remain independent.
For GPs considering this career, appropriate training, realistic workload planning, secure systems and an understanding of how to obtain instructions are important foundations.
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The Expert Witness Institute (EWI) provides comprehensive support for engineering professionals aspiring to become expert witnesses. Members benefit from training, resources, and networking opportunities to enhance their expertise and uphold the highest standards in their work.
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If you require a GP expert witness, explore our directory today. If you are a GP considering expert witness work, contact us to find out how the EWI can assist you in this journey.