To make a claim against the NHS for negligence in England, you need to show two things: that your treatment fell below the standard a competent professional would have provided, and that this failure caused you avoidable harm. Almost every claimant uses a specialist solicitor on a no-win, no-fee basis. The solicitor gathers your records, instructs an independent medical expert, and sends a formal Letter of Claim to the NHS trust and to NHS Resolution, the body that defends claims on behalf of trusts. Most cases settle without ever reaching a courtroom. Scotland and Northern Ireland run different systems with their own rules; what follows applies to England.
Act Before Your Time Runs Out
The single most important thing to check first is the deadline. Under the Limitation Act 1980, an adult has three years to bring a clinical negligence claim. The clock starts either on the date the negligence happened or on the date you first realised you had suffered a significant injury linked to your treatment, whichever is later.1Legislation.gov.uk. Limitation Act 1980 – Section 11
That second trigger matters because many injuries are not obvious at the time. Under Section 14, your “date of knowledge” is the date you first knew the injury was significant, that it was connected to the treatment, and who was responsible.2Legislation.gov.uk. Limitation Act 1980 – Section 14 You do not need to have known the treatment was legally negligent. The clock starts when you knew enough facts to make the claim worth investigating.
Some situations shift the rules:
- For children, the three years do not start until their eighteenth birthday, so a claim can be brought any time up to age twenty-one. A parent or litigation friend can act earlier on the child’s behalf.3Legislation.gov.uk. Limitation Act 1980 – Section 28
- For someone who lacks mental capacity to manage legal affairs, the time limit is suspended entirely and only begins if capacity is regained.3Legislation.gov.uk. Limitation Act 1980 – Section 28
- Where negligence contributed to a death, dependants have three years from the date of death or from the date they became aware of the relevant facts, under the Fatal Accidents Act 1976. That right is lost if the deceased’s own claim had already expired before they died.4Legislation.gov.uk. Limitation Act 1980 – Section 12
Missing the deadline is not automatically fatal. Under Section 33, a court can allow a late claim if it is fair to do so, weighing the reasons for the delay, how quickly you acted once you realised you had a claim, and whether evidence has deteriorated.5Legislation.gov.uk. Limitation Act 1980 – Section 33 This is a safety valve, not something to rely on. Get advice as early as you can.
What You Need to Prove
A claim rests on two pillars. Drop either and the claim fails.
Breach of Duty
Breach of duty means the care fell short of what a competent professional in that specialty would have provided. Courts use the Bolam test: a clinician is not negligent if their approach was supported by a responsible body of medical opinion in the same field, even if other practitioners would have done something different. The Bolitho case added that the opinion relied on must be logically defensible; a court will not accept reasoning that falls apart when the risks and benefits are weighed.
Causation
You then have to show the substandard care actually caused your injury or made it worse. The usual approach is the “but for” test: but for the negligent act or omission, would you have suffered this harm? If a delayed diagnosis would have made no difference because the condition was already too advanced, causation fails even though the delay was a clear mistake. Where several factors contributed, courts sometimes apply a “material contribution” test instead, which accepts that the negligent act does not have to be the sole cause as long as it made a meaningful contribution. Your solicitor and medical expert will tell you which test fits your situation.
Paying for the Claim
Clinical negligence claims are expensive to run because they need independent experts, detailed record analysis, and often a specialist barrister. Almost no claimant pays upfront.
Conditional Fee Agreements
The standard route is a conditional fee agreement, commonly called “no win, no fee.” If the claim fails, your solicitor charges no fees. If it succeeds, they take a success fee on top of their normal costs, capped at 25% of the compensation you receive for pain, suffering, loss of amenity, and past financial losses.6House of Commons Library. No Win, No Fee Funding Arrangements The success fee cannot be taken from awards for future losses such as ongoing care costs, which protects claimants in the most serious cases.
After-the-Event Insurance
England uses a “loser pays” costs system, so if your claim fails you could be ordered to pay the defendant’s legal costs. After-the-event (ATE) insurance covers that risk, and your solicitor usually arranges it as part of the funding package. In clinical negligence cases, the ATE premium for expert medical reports can be recovered from the defendant if you win.
Legal Aid
Legal aid for clinical negligence was largely removed by the Legal Aid, Sentencing and Punishment of Offenders Act 2012. A narrow exception survives for certain cases involving children who suffered severe neurological injuries during birth. For almost all adult claims, conditional fee agreements are the only realistic funding route.
Build Your Evidence Early
Strong evidence is what separates claims that settle for fair compensation from claims that stall or fail. Start collecting as soon as you can.
Medical records. Request your complete records from the hospital, GP surgery, and any other provider involved: notes, test results, imaging, referral letters, correspondence. Under data protection law you have the right to access them, and most NHS trusts provide them free of charge. These records are the first thing any medical expert will review.
Your own account. Write a detailed, chronological account while events are fresh. Include appointment dates, symptoms you reported, the advice or treatment you were given, and the names of staff you dealt with. Record how the injury has affected your daily life: activities you can no longer do, pain levels, emotional impact, and effects on your independence or relationships. Clinical notes rarely capture any of this.
Financial documents. Keep receipts for every cost resulting from the negligence: private treatment, prescriptions, travel to appointments, equipment, home changes. If your ability to work has been affected, gather payslips, tax returns, and a letter from your employer confirming lost earnings or reduced hours.
An independent expert report. Your claim will almost certainly need a report from an independent medical expert in the same specialty. This is not your treating doctor. The expert reviews your records and gives an objective opinion on whether the care fell below the expected standard and whether that failure caused your injury. Many claims are won or lost on this report, and courts expect one in virtually every clinical negligence case. Your solicitor instructs the expert, but the report is the engine of the entire claim.
The Steps of a Claim
Clinical negligence claims follow the Pre-Action Protocol for the Resolution of Clinical Disputes, a structured procedure designed to resolve disputes before they reach court.7Justice UK. Pre-Action Protocol for the Resolution of Clinical Disputes
The Letter of Claim
The formal process begins when your solicitor sends a Letter of Claim to the NHS trust. It sets out a clear summary of the facts, identifies the standard of care that was breached, explains how the breach caused your injury, and outlines the losses you have suffered. A copy goes to NHS Resolution, the arm’s-length body of the Department of Health and Social Care that manages clinical negligence claims on behalf of NHS trusts in England.8House of Lords Library. Negligence in the NHS – Liability Costs
The Investigation and Letter of Response
NHS Resolution then has four months to investigate.7Justice UK. Pre-Action Protocol for the Resolution of Clinical Disputes Their legal team reviews the medical records, obtains their own expert evidence, and assesses whether the trust’s care was defensible. The investigation concludes with a Letter of Response, which either admits liability in full or in part, denies it, or asks for more time or information.
If liability is admitted, the case moves on to valuing your compensation. If liability is denied, your solicitor will review the reasoning, consider whether the denial is well founded, and advise you on whether to proceed. A denial is not the end of the road, but the claim becomes more contested and more expensive to pursue.
Settlement, Part 36, and When Court Happens
The overwhelming majority of clinical negligence claims settle without a trial. NHS Resolution has strong financial reasons to settle valid claims rather than fight them in court, where costs escalate quickly for both sides.
Once liability is accepted, the dispute shifts to how much compensation is appropriate. Your solicitor prepares a detailed schedule of losses covering both the harm already suffered and the costs you will face in the future. Negotiations can take months in complex cases, particularly where future care needs must be calculated over a lifetime.
Either side can make a formal settlement offer under Part 36 of the Civil Procedure Rules. These offers have teeth. If you make a Part 36 offer, the defendant rejects it, and the court later awards you at least as much, the defendant faces enhanced interest on the damages and costs assessed on a more generous basis. If the defendant makes an offer, you reject it, and you fail to beat it at trial, you could be ordered to pay the defendant’s costs from the date the offer expired.9Justice UK. Part 36 – Offers to Settle The mechanism pushes both sides towards realistic figures.
If negotiations break down, your solicitor can issue court proceedings. Settlement remains possible at any stage, right up to the morning of trial. A trial typically runs several days and involves cross-examination of expert witnesses. Costs are significant and the outcome is never guaranteed. Most solicitors will have a frank conversation with you about the strength of your evidence before recommending that step.
What You Can Be Compensated For
Compensation falls into two categories: general damages for the injury itself, and special damages for the financial impact.
General damages compensate for pain, suffering, and loss of amenity. “Loss of amenity” means the reduction in your quality of life: hobbies you can no longer enjoy, independence you have lost, limitations on daily activities. The amount depends on severity and permanence, guided by the Judicial College Guidelines, which set brackets for different types of harm. A minor soft tissue injury and a catastrophic brain injury sit at opposite ends of a very wide range.
Special damages cover the measurable financial losses caused by the negligence. They are calculated precisely and supported by evidence. Common categories include:
- Lost earnings, both past income already missed and future earning capacity where the injury affects your ability to work long-term.
- Care costs, including professional nursing, physiotherapy, and personal assistance you have needed or will need. Unpaid care provided by family members can also be claimed.
- Medical expenses for private treatment, rehabilitation, therapy, medication, and equipment not covered by the NHS.
- Travel costs for attending medical appointments, therapy sessions, and hospital visits.
- Home adaptations such as ramps, stairlifts, or wet rooms, or the cost of moving to more suitable accommodation.
In the most serious cases, future losses dwarf past losses. A young person left with a permanent disability may need lifetime care, and the compensation must account for decades of support, accommodation, and lost earning potential. Those claims can reach several million pounds.
Where negligence causes death, dependants can claim for financial losses including the deceased’s income and the value of services they provided. A fixed statutory bereavement award of £15,120 is payable to the deceased’s spouse, civil partner, or (for unmarried children under eighteen) their parents.10Legislation.gov.uk. Limitation Act 1980 – Part I Actions in Respect of Wrongs Causing Personal Injuries or Death That figure was set in May 2020 and has not been increased since. It sits on top of any dependency claim, which is usually much larger.
Complaints Are a Separate Route
Making a formal complaint to the NHS is not the same as making a legal claim, and it is worth being clear about the difference before you go either way. Complaints go through the trust’s own procedure, with escalation to the Parliamentary and Health Service Ombudsman if you are not satisfied. The Ombudsman can recommend an apology, a policy review, or reimbursement of out-of-pocket costs, but cannot award compensation in the way a court can.11Parliamentary and Health Service Ombudsman. What We Can and Can’t Help With If financial compensation for a serious injury is your main goal, the complaints route alone will not get you there.
You can complain and pursue a legal claim at the same time. The complaint process can produce useful evidence, especially internal investigation reports. Anything you say during a complaint is on the record, though, so if you are also considering legal action it is worth getting solicitor advice before putting detailed written statements to the trust.
Separately, NHS providers have a legal duty of candour under Regulation 20 of the Health and Social Care Act 2008 (Regulated Activities) Regulations 2014. They must be open with you about safety incidents and give you an apology regardless of who is at fault.12Care Quality Commission. Regulation 20 – Duty of Candour An apology given under this duty is not an admission of negligence, but the provider’s account of what happened can be a useful starting point when you investigate a claim.