If you’ve suffered avoidable harm because of NHS or private medical treatment, you may be wondering whether you have a medical negligence claim.
To successfully bring a medical negligence claim, also known as a clinical negligence claim, four key elements usually need to be proven:
- A healthcare professional owed you a duty of care.
- The care or treatment you received fell below an acceptable standard.
- That failure caused avoidable injury or worsened your condition.
- You suffered physical, psychological, or financial losses as a result.
Medical negligence claims are often complex, and it is not always immediately clear whether negligence has occurred. Specialist medical negligence solicitors can obtain your medical records, investigate what happened and obtain independent expert evidence to determine whether you have a claim.
What constitutes “medical negligence”?
Medical negligence occurs when a doctor, nurse, dentist, hospital, GP or other healthcare professional provides treatment that falls below an acceptable professional standard and causes avoidable harm.
Both elements must be present:
- The treatment must have been negligent.
- The negligence must have caused injury or loss.
Not every poor medical outcome amounts to negligence. Medicine is not an exact science, and even appropriate treatment can sometimes result in complications. Equally, a mistake that causes no measurable harm will not usually result in a successful claim.
Common allegations include:
- Diagnostic failure: such as missed sepsis, unrecognised cauda equina syndrome, or late cancer diagnosis.
- Surgical mistakes: including operating on the wrong site, damaging nearby structures, or leaving surgical swabs behind.
- Medication errors: incorrect dosages, overlooked allergies, and harmful drug interactions.
- Maternity injuries: like cerebral palsy, brachial plexus damage, or severe tearing during birth.
- Consent issues: failure to discuss material risks beforehand.
- Primary care deficiencies: repeated visits where red-flag symptoms were ignored.
- Dental negligence and cosmetic procedures: nerve injuries, failed implants, or inadequate aftercare.
Complications listed on consent forms, rare reactions, and diseases progressing despite timely care are not grounds for litigation. Courts assess whether the practitioner acted reasonably at the time, based on the knowledge available then. Hindsight is not considered, which often resolves many cases before formal legal action begins.
The four elements behind every claim
Every clinical negligence claim in England and Wales is built around four core elements:
- Duty of care
- Breach of duty
- Causation
- Damage
Failure to prove any one of these elements is likely to prevent a claim from succeeding.
Some firms combine causation and damage into a single test, arguing that harm without a causal link leads nowhere. Separating them makes each requirement clearer, especially the last, which quietly ends many cases before they proceed.
Test one: was a duty of care owed?
In almost all cases, yes – without dispute. Anyone treating you assumes a duty of care from the moment treatment begins, whether it’s a hospital consultant, nurse, paramedic, pharmacist, or dentist.
NHS trusts are vicariously liable for employed staff. Independent practitioners are insured through organisations like the MDU or MPS. Genuine disputes on this point arise only in rare scenarios: informal advice at a social event, telephone triage, or procedures overseas.
Test two: was that duty breached?
A breach occurs when treatment falls below the standard a responsible group of professionals in the same speciality would accept. This standard is named after Bolam v Friern Hospital Management Committee, which asks not whether superior care was available, but whether the treatment used had reputable support. This is known as the “Bolam test”.
Importantly, the law does not ask whether better treatment was available. It asks whether the treatment had support from a responsible body of professional opinion.
For example, two competent surgeons may choose different methods of treatment. A claim will not succeed simply because one option might have been considered preferable.
However, treatment may be negligent where no reasonably competent practitioner would have acted in the same way.
Healthcare professionals are judged according to the standards expected of someone at their level of experience and training.
Bolitho: when accepted practice cannot withstand scrutiny
The later case of Bolitho v City and Hackney Health Authority refined the Bolam principle.
The courts may reject professional opinion if the reasoning behind it cannot withstand logical scrutiny.
Although this is applied cautiously, it allows courts to examine whether accepted medical practice is genuinely reasonable rather than simply longstanding custom. This is known as the “Bolitho test”.
Test three: did the breach cause your injury?
Causation requires a counterfactual: would the injury have occurred anyway without the substandard care? A breach alone is not enough if the harm was inevitable.
For example, if a chest X-ray showing a tumour was misread, delaying diagnosis by nine months, recovery depends on whether earlier detection would have changed the outcome – curable then, incurable now. If the cancer had already spread beyond treatment at first presentation, the oversight caused distress but no compensable harm.
Patients are often already unwell before seeing a doctor. Distinguishing natural progression from avoidable deterioration is a key point of contention in these cases.
Material contribution and divisible harm
Some injuries result from multiple causes, making the “but for” test impractical. In such cases, judges assess whether substandard care made a material contribution to the final condition, as outlined in Bailey v Ministry of Defence. Sepsis, cumulative brain damage, and pressure sores often rely on this approach.
Lost chances rarely help. Gregg v Scott established that a reduced survival chance below 50% does not qualify for compensation in personal injury cases.
Test four: what damage did you actually suffer?
Recoverable harm must be identifiable, measurable, and more than trivial. Emotional distress alone, or worry without a diagnosed condition, generally does not qualify.
Damages typically fall into these categories:
- Bodily deterioration (e.g. additional surgeries, permanent scarring, amputation, incontinence, or reduced life expectancy).
- Psychiatric illness (e.g post-traumatic stress or a diagnosed depressive disorder, not just understandable distress).
- Financial loss (e.g. lost earnings, private treatment costs, and support from relatives).
What evidence helps prove clinical negligence?
Evidence is the foundation of every successful medical negligence claim. Most clients do not need to gather evidence themselves before contacting a solicitor, though that burden falls on you if you bring a claim unrepresented.
Medical records
Notes, observation charts, scan images, lab results, and correspondence form the backbone of an investigation. Requests are made under data protection laws, with providers required to respond within a month. Missing pages, contradictory entries, or retrospective notes can also be revealing.
Your own statement
Written testimony captures what the file omits: your symptoms, warnings, waiting times, and the impact on your family. Specifics are more valuable than generalisations. For instance, diaries, messages to family, and appointment reminders can help clarify dates and details.
Independent expert reports
Independent expert opinion is usually essential. Two types of experts are typically instructed:
- Liability experts assess whether care met professional standards
- Condition-and-prognosis experts evaluate severity, recovery, and future needs
Their duty under Part 35 of the Civil Procedure Rules is to the court, not the person paying the fee. A critical opinion is valuable, even if unwelcome, as it can prevent a long, unwinnable case.
Other sources many people overlook
- Serious incident investigations: internal reviews after things go wrong, including Datix entries.
- Complaint correspondence: responses from PALS may include admissions of value.
- Inquest material: coroner findings, pathology results, and sworn testimony.
- Ambulance logs: details often missing from hospital records.
- Photographs: wounds, scarring, and tissue damage with clear dates.
How long do you have?
You usually have three years starting from the treatment itself or from the moment you first linked your injury to poor care. Several exceptions exist:
- Children: the time begins on the eighteenth birthday, giving until age 21.
- Protected parties: no time limit applies to those unable to manage legal proceedings.
- Deaths: three years from the date of death or from when the family became aware of the issue.
- Judicial discretion: Section 33 of the Limitation Act 1980 allows for extensions, though relying on it is risky.
What does the process involve?
- Free assessment: an initial conversation determines if an investigation is worthwhile.
- Funding arranged: usually through a conditional fee agreement supported by insurance.
- Documents gathered and organised for review.
- Experts appointed to assess standards and consequences.
- Letter of claim sent under the pre-action protocol, with four months for a formal reply.
- Response received: full admission, outright denial, or something in between.
- Negotiation follows, with legal proceedings initiated if discussions fail.
- Resolution: most cases settle without a trial.
Learn more about the clinical negligence claims process.
Establishing the value of a claim
Liability addresses only part of the question. Compensation includes general damages for pain, suffering, and loss of amenity, assessed using Judicial College Guidelines and similar cases – plus special damages for financial loss.
In serious cases, financial costs often outweigh the injury itself. These include care plans, appropriate housing, therapies, equipment, lost pension rights, and case management. Calculating these involves input from care experts, occupational therapists, employment consultants, and actuaries.
Contact NHS Negligence
Every claim we accept operates on a no-win, no-fee basis. You pay nothing to start, nothing during the investigation, and nothing at all if the case is unsuccessful. If we win, an agreed-upon percentage of your compensation covers our costs.
If you believe you’ve suffered avoidable harm due to negligent medical treatment, contact our specialist team today for a free, no-obligation assessment of your claim.