When treatment has left you worse off, it can be difficult to know whether you have experienced a complication, poor service or something more serious. Knowing how to report clinical negligence gives you a clear route to raise urgent safety concerns, obtain answers and protect your position if legal action may be necessary.

A report or formal complaint is not the same as a compensation claim. You may need to do both, but they have different purposes. A complaint can prompt an investigation and explanation from the organisation responsible for your care. A clinical negligence claim seeks compensation where substandard treatment caused avoidable injury or loss.

Act first if there is an immediate risk

If you or someone else is at immediate risk because of unsafe treatment, seek appropriate medical help without delay. This may mean contacting NHS 111, attending A&E or calling 999 in an emergency. Your health must come before gathering paperwork or making a complaint.

If the concern is that a clinician’s conduct presents an ongoing risk to patients, report it to the provider straight away. Ask for the matter to be treated as a patient safety concern and make a note of who you spoke to, when, and what was said.

A serious mistake does not automatically prove clinical negligence. Medical treatment involves risks, and poor outcomes can occur even where reasonable care was provided. The key legal questions are whether the care fell below an acceptable professional standard and whether that failure caused harm that would otherwise have been avoided.

How to report clinical negligence to an NHS provider

For NHS treatment, it is usually sensible to begin by raising the issue with the organisation that provided the care. This might be an NHS hospital trust, GP surgery, dental practice, ambulance service, mental health trust or other local NHS service.

You can initially speak to the relevant department, the practice manager or the organisation’s complaints team. If you need help understanding the process, the Patient Advice and Liaison Service, commonly known as PALS, can explain how concerns are handled and help you communicate with the provider. PALS can be particularly useful where you need answers quickly, but it does not replace a formal complaint if you want the issue formally investigated.

Set out your complaint in writing where possible. Keep the language factual and focused. Explain what happened, the dates involved, the people or departments concerned, the harm caused and the answers or action you want. For example, you may ask for an explanation of a delayed diagnosis, details of how a medication error occurred, confirmation of changes to prevent repetition, or a meeting with the clinical team.

Under the NHS complaints procedure, complaints should normally be made within 12 months of the incident or of becoming aware of the issue. A later complaint can sometimes still be accepted if there is a good reason for the delay and a fair investigation remains possible. Do not assume you have lost your opportunity simply because time has passed.

The provider should acknowledge your complaint, agree how it will be handled and give a response after investigating. Read the response carefully. It may identify facts, admissions, records or expert findings that are relevant to a potential claim. Equally, a response that denies fault is not necessarily the final word.

If you remain dissatisfied

If an NHS organisation’s final response does not properly address your concerns, you may be able to ask the Parliamentary and Health Service Ombudsman to review the complaint. The Ombudsman is independent of the NHS provider, but it does not generally award the compensation available through a clinical negligence claim.

This route can be valuable where your priority is accountability, an apology, a fuller investigation or improvements to care. It is not always the quickest route, and it may be sensible to obtain legal advice before pursuing it if you are also considering a claim.

Reporting concerns about private treatment

If the treatment was provided privately, start with the clinic, hospital, care home, dentist or practitioner’s own complaints procedure. Ask for a copy if you have not been given one. Private providers should investigate concerns properly and provide a reasoned response.

Some independent healthcare providers are covered by external complaints arrangements. The appropriate route depends on the provider and the treatment received. A solicitor can help identify who is responsible where care involved several organisations, such as private treatment followed by NHS emergency care.

You can also raise concerns about the safety or quality of a regulated provider with the Care Quality Commission. The CQC uses information from patients when monitoring services, although it will not investigate an individual complaint or secure compensation for you. It is best viewed as a way to alert the regulator to potential wider risks.

Report a professional conduct concern where necessary

Clinical negligence and professional misconduct are different issues. A clinician may have made a negligent error without committing misconduct. However, where you are concerned about dishonesty, abuse, dangerous practice, serious disregard for patient safety or repeated failures, a report to the relevant professional regulator may be appropriate.

For example, doctors are regulated by the General Medical Council, nurses and midwives by the Nursing and Midwifery Council, and dentists by the General Dental Council. Regulators can investigate fitness to practise and impose restrictions or sanctions. They cannot award compensation, and their processes may take time.

Where you believe there has been deliberate harm, fraud, assault or another criminal offence, contact the police. This is not the usual route for a medical error, but it may be necessary in exceptional circumstances.

Preserve the information that matters

Clinical negligence cases are decided on evidence, not on the strength of a complaint alone. Start keeping a clear record as soon as you can. Write down your symptoms, appointments, conversations, treatment dates, names of staff and the practical consequences of what happened.

Keep copies of letters, prescriptions, discharge summaries, test results, photographs of visible injuries and receipts for expenses. If the incident has affected your ability to work, retain payslips and details of time off. Family members who witnessed events or changes in your condition may also be able to provide useful evidence later.

You have the right to request copies of relevant medical records. These can include hospital notes, GP records, imaging, consent forms and correspondence. Records are often central to understanding what decisions were made, what warnings were given and whether there was a delay in diagnosis or treatment.

Do not alter documents or rely solely on memory months later. A contemporaneous note, even a simple one written on the day, can be valuable.

Do not let the complaint process delay legal advice

In most adult clinical negligence claims, court proceedings must be started within three years of the negligent treatment or the date you first had sufficient knowledge that negligence may have caused your injury. There are important exceptions. For a child, the three-year period generally begins on their 18th birthday. Different rules can apply where a person lacks mental capacity.

The time limit is strict, and investigating a claim can take considerable time. Medical records must be reviewed and independent medical experts may need to assess whether the standard of care was negligent and whether it caused the injury. For that reason, it is wise to seek specialist advice well before any deadline approaches.

Making a complaint can provide useful information, but it does not stop the limitation clock. An apology or internal investigation does not necessarily mean the provider accepts legal liability. Equally, a provider’s refusal to uphold a complaint does not prevent a well-supported claim from succeeding.

What a clinical negligence solicitor can do

A specialist solicitor can assess the circumstances, obtain records, identify the correct defendant and advise whether there is a realistic basis for a claim. They can also explain funding options and the likely value of losses such as pain and suffering, loss of earnings, care needs, treatment costs and travel expenses.

Not every case should proceed. Expert evidence may show that the treatment was reasonable, or that the same injury would have occurred in any event. Clear advice at an early stage helps you make an informed decision and avoids unnecessary stress.

At Cooper Hall Solicitors, our role is to protect your interests while giving you direct, practical guidance on the options available. You do not need to have every document or every answer before asking for advice. What matters is taking the next sensible step while the evidence is available and your legal rights remain protected.