
Criminal Expert Witnesses
McCollum Consultants provides solicitors, barristers, police forces and investigative authorities with access to experienced medical expert witnesses for criminal cases. Our experts provide independent, objective medico-legal opinion on injuries, clinical records, causation, standards of care and other complex medical evidence, supporting criminal investigations and court proceedings.
Our experts are based in the UK and accept instructions in relation to UK and international matters, subject to the relevant jurisdiction, scope of instruction and the expert’s area of expertise.
Independent Medical Evidence for Criminal Cases
Independent medical expert evidence can be central to the interpretation of complex clinical and forensic issues in criminal investigations and proceedings. Our experts provide clear, well-reasoned opinion based on their specialist clinical experience, current practice and the available medical evidence.
Depending on the circumstances of the case, expert opinion may address injuries, causation, clinical care, toxicology, medical records and other specialist medical issues. Reports are prepared to provide clear and impartial evidence for investigators, legal teams and the courts.
Criminal Areas of Expertise
Our clinical expert witnesses provide independent medico-legal opinion across a broad range of criminal matters, drawing on current clinical practice and specialist expertise, including:
Homicide, Gross Negligence Manslaughter (GNM) and Serious Assault
Expert medical assessment of fatal and non-fatal injuries, including causation, mechanism and severity of injury, clinical management and other complex medical issues relevant to homicide, gross negligence manslaughter and serious assault proceedings.
Death & Harm in Healthcare Settings
Deaths and serious harm arising in healthcare settings, including alleged medical negligence, failures in treatment, monitoring or standards of care, unexpected or avoidable deaths, causation, and other complex medical issues relevant to investigations.
Forensic Medicine
Forensic medicine, including expert interpretation of injuries, mechanisms and causation of injury, toxicology findings, post-mortem evidence, cause of death, and other complex medical issues relevant to criminal investigations.
Sexual Offences
Sexual offence cases, including expert medical assessment and interpretation of injuries, forensic and clinical findings, examination records, causation and other complex medical issues relevant to criminal investigations and legal proceedings.
Road Traffic Collisions (RTCs)
Forensic injury analysis and medical interpretation of serious injuries, including the nature, severity, mechanism and causation of injury, consistency with reported circumstances, clinical findings and other complex medical issues relevant to criminal investigations and legal proceedings.
What Can a Criminal Expert Witness Address?
Depending on their specialty and the nature of the instruction, our criminal and coronial expert witnesses can provide independent medico-legal opinion on:
Causation
The nature, severity and likely mechanism of injuries, and whether the available medical evidence supports a proposed sequence of events or cause.
Cause of Death
Clinical and medical evidence relevant to determining the cause and circumstances of death, including the interpretation of medical records and post-mortem findings.
Standards of Clinical Care
Where relevant, whether the clinical care provided was consistent with the standards reasonably expected in the circumstances.
Toxicology & Medical Evidence
The interpretation and significance of toxicology results, prescribed and non-prescribed drugs, poisoning, drug interactions and other specialist medical findings.
How to Instruct a Criminal Expert Witness
- Send us the case details
Provide the key party details, a brief outline of the clinical issues and the specialty required. - We complete a conflict check
We carry out an initial conflict check before identifying suitable experts. - We nominate appropriate experts
We provide one or more appropriately qualified experts for consideration. - Review availability, timescales and costs
We provide available information on expert availability, anticipated report turnaround and estimated fees. - Instruct your chosen expert
Where helpful, we can arrange a preliminary discussion before formal instruction.
Why Instruct a Criminal Expert Through McCollum Consultants?
Specialist Expertise
We work with appropriately qualified experts across a broad range of medical, surgical, nursing, rehabilitation and allied healthcare specialties. Our experts bring relevant clinical experience and specialist knowledge to the medical issues arising in each case.
Carefully Matched Experts
Every instruction is considered individually. We review the nature of the case, injuries sustained and clinical issues in dispute before nominating experts whose current clinical practice, subspecialist expertise and medico-legal experience are closely matched to the circumstances of the instruction.
Medico-Legal Training
Our experts are supported through dedicated medico-legal training and continuing professional development, helping them understand the responsibilities and standards expected of an expert witness. This includes preparing clear, well-reasoned reports and maintaining independence, objectivity and an understanding of their overriding duty to the court.
A Personal, Responsive Service
We believe expert witness work should be personal, not transactional. We take the time to know our experts, understand their individual expertise and develop long-standing professional relationships with the solicitors, insurers and organisations that instruct them. This enables us to provide a responsive, consistent and personal service throughout every instruction.
Clear Timescales & Fees
We understand the importance of certainty when managing litigation. Before instruction, we can provide information on expert availability, anticipated report turnaround times and estimated fees, helping instructing parties select an appropriate expert and manage the case effectively.
Support Throughout Proceedings
Our involvement extends beyond the initial instruction. We provide a consistent point of contact throughout the case and can assist with appointments, medical records, reports, conferences, supplementary questions, discussions between experts, joint statements and preparation for giving evidence. For complex or multidisciplinary cases, we can also help coordinate experts across multiple specialties.
Need a Criminal Expert Witness?
Contact McCollum Consultants to discuss the medical or forensic issues involved in your case and the specialist expertise required. We can nominate an appropriately qualified expert and provide details of availability, anticipated report turnaround times and estimated fees.





