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John Gray has a busy civil practice focused upon medical law (including clinical negligence), professional negligence litigation and general civil litigation including, personal injury.

John has broad experience in medical law which began with his masters degree in the subject.

He is regularly instructed in clinical negligence cases involving surgical and pharmaceutical negligence, misdiagnosis and delayed diagnosis, inappropriate treatment and lack of consent. He also undertakes cases involving allied professions including nurse practitioners, dentists, etc.

He has represented doctors before the General Medical Council.

His expertise is also recognised in the academic medical law world . John is a Lay Member to the University of Liverpool Research Ethics Committee. Over the years he has lectured to government lawyers in Kuala Lumpur, co-organised and chaired at a British Academy Conference, lectured to 200 orthopaedic surgeons at their Annual Conference and to solicitors on professional negligence in clinical negligence work at a Action Victims Medical Accidents conference.

John is regularly instructed in matters of professional negligence especially those involving solicitors and surveyors. He has successfully acted for a number of claimants where their previous solicitors mismanaged the litigation He is currently representing 100+ householders in the 'leasehold scandal' litigation where numerous conveyancing solicitors failed to properly advise purchasers of new build homes as to the onerous terms of their leases. Many of his cases have involved complex issues of causation and limitation.

In personal injury work, John is experienced in high value work, including subtle brain injury cases, permanent restriction/diminution in the ability to work and the full range of industrial disease claims. John has a large amount of experience in dealing with claims with added complexity such as travel law / overseas accident claims. He is a veteran in dealing with cases where allegations of fraud (including fraud rings) or related matters such as LVI are involved. John has experience of ancillary litigation that arises in the context of personal injury litigation including CICA, credit hire, inquests and costs. He has regularly lectured to practising solicitors on matters of substantive and procedural law.

John also undertakes work other civil / commercial work including: Contractual Disputes, Sale of Goods; and Supply of Goods and Services.

In relation to all the above areas, John is equally happy acting for the Claimant or Defendant.

For a number of years at the start of his career John undertook criminal work alongside his civil practice. Even when he ceased general criminal work John remained, until the Panel’s abolition, a member of the Attorney-General’s Unified List of Prosecuting Advocates prosecuting on behalf of government departments. He is therefore at ease defending corporate and individual clients against regulatory prosecutions.

John was an early adopter of the concept of mediation and undertook training as a mediator with the Academy of Experts, London over 10 years ago. In 2017 he undertook and passed the week long Civil Mediation Council accredited mediator training and assessment at the University of Central Lancashire. He is equally available to act as mediator or advisor / advocate at mediations.

Before joining chambers, John was employed in legal roles in Sydney, Australia and within HM Customs & Excise.


  • Oriel Chambers

    Barrister & Mediator
    - Current


  • LLB(Hons) Law
  • PgDip Legal Practice (Bar Vocational Course)
  • MA Healthcare Ethics & Law

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