Quick answer

If you or a loved one suffered a head or brain injury in an accident that wasn't your fault, you may be able to claim compensation. These are among the most serious and highest-value personal injury claims, because the effects can be lifelong and the costs of care, lost earnings and adaptations are large โ€” so they need specialist brain-injury solicitors and expert medical evidence. An adult with capacity usually has three years to claim, but where the injury removes a person's mental capacity, no ordinary time limit applies for as long as that capacity is lacking.

A blow to the head is unlike almost any other injury. Two people can have the same accident โ€” one walks away shaken, the other is changed for life โ€” and the difference is rarely visible at the roadside. Brain injuries can be hidden or slow to emerge, the recovery is uncertain, and the financial consequences for a family can be enormous. This guide explains, in plain English, how UK compensation claims for head and brain injuries work, why they are handled differently from ordinary claims, and where to get proper help. We are an independent information service, not a law firm โ€” nothing here is legal advice about your own case.

The spectrum of head and brain injuries

"Head injury" covers a wide range, and the label given to your injury shapes both the medical care and the value of any claim. At one end are minor head injuries and concussion: short-lived symptoms such as headache, dizziness, nausea or feeling "foggy" that usually resolve within days or weeks. Next is mild traumatic brain injury, where a knock causes a brief loss of consciousness or confusion and may leave lingering problems with memory, concentration, mood or fatigue. At the most serious end sit moderate, severe and very severe brain injuries, which can cause lasting physical disability, profound cognitive and personality change, and โ€” in the gravest cases โ€” a need for round-the-clock care.

A crucial point runs through all of this: the symptoms of a brain injury can be hidden or delayed. Someone may feel "fine" in the immediate aftermath and only later develop headaches, irritability, sleep problems or difficulty at work. That is why a head injury should never be brushed off, and why early specialist medical assessment matters so much.

โš ๏ธ Get a head injury assessed early โ€” even if you feel fine

Brain-injury symptoms can be delayed or subtle. If you have had any blow to the head, seek a prompt medical assessment and tell a clinician about every symptom, however minor. Early NHS records of memory, mood, headache or concentration problems are vital medical evidence โ€” and, more importantly, some bleeds on the brain are medical emergencies. When in doubt, get checked.

Common causes of head and brain injuries

Brain injuries reach our guidance from across the whole field of accident law. The most common causes of claims include:

  • Road traffic accidents โ€” collisions, motorbike and cycle crashes and pedestrian injuries are a leading cause of serious head trauma. See our road traffic accident claims guide.
  • Falls, slips and trips โ€” a fall from height or onto a hard surface, including in public places, can cause a significant head injury.
  • Workplace accidents โ€” falls from ladders or scaffolding, falling objects and machinery incidents, often where head protection was missing. See accident at work claims.
  • Assaults โ€” head injuries caused by violent crime, which may be pursued through the CICA scheme (see below).
  • Sports and recreation โ€” contact sports, riding and similar activities.
  • Medical negligence โ€” for example a delayed diagnosis of a bleed on the brain, or oxygen deprivation at birth. See medical negligence claims.

Why brain injury claims are different โ€” and need a specialist

Serious head and brain injury claims are widely regarded as among the most complex and highest-value cases in personal injury law. The stakes are simply higher: the compensation has to fund decades of need, not just put right a few weeks of pain. Getting that valuation right calls for a specialist brain-injury solicitor working with a multi-disciplinary team of experts โ€” typically neurologists (to diagnose and prognose the injury), neuropsychologists (to measure cognitive and behavioural effects), care experts (to cost future care), and occupational therapists (to assess daily living and adaptations). A general high-street firm may not have this network or this experience.

๐Ÿ’ก Use a specialist โ€” and lean on Headway

For anything beyond a minor knock, choose a solicitor who specialises in brain injury work, is SRA-regulated, and is familiar with the Rehabilitation Code. Alongside legal help, Headway โ€” the brain injury association โ€” offers a helpline, information and local support groups for survivors and families across the UK. Our guide to choosing a solicitor explains what to look for.

The heads of loss that loom large

In a serious brain-injury claim the financial losses (the "special damages") frequently dwarf the award for the injury itself. The categories that matter most include:

  • Long-term care and case management โ€” paid carers, support workers and a professional case manager to coordinate everything, often for life.
  • Loss of earnings and earning capacity โ€” past wages lost, plus future earnings the person can no longer expect to make, calculated over a working lifetime.
  • Accommodation and adaptations โ€” the cost of a suitable home or of adapting an existing one (ramps, wet rooms, ground-floor living).
  • Assistive technology and equipment โ€” communication aids, mobility equipment and devices that support independence.
  • Therapies and rehabilitation โ€” physiotherapy, neuropsychology, speech and language therapy and occupational therapy.
  • Court of Protection deputyship costs โ€” where the person lacks capacity, the cost of having a deputy manage a large award.

Our overview of what compensation covers explains how general and special damages fit together.

Mental capacity, litigation friends and the time limit

One of the most important features of brain-injury law concerns mental capacity โ€” a person's ability to make and communicate their own decisions. This is governed by the Mental Capacity Act 2005 in England and Wales. Where a brain injury means someone cannot manage their own legal claim, they are treated as a "protected party", and a litigation friend โ€” usually a parent, spouse or other close relative โ€” runs the claim on their behalf under the court's supervision. Any settlement for a protected party must be approved by the court.

This has a vital consequence for deadlines. For an ordinary adult with capacity, the three-year limitation period applies. But while a person lacks capacity, that clock does not run at all โ€” so there is no ordinary three-year bar for protected parties. If capacity is later regained, time can start to run from that point. Where a substantial award needs long-term management, the Court of Protection can appoint a deputy to handle the person's property and financial affairs.

โณ Time limits โ€” and why they may not apply

For an adult with capacity, the Limitation Act 1980 gives you three years from the accident (or date of knowledge) to start a claim. If the injury removes the person's mental capacity, the limitation clock does not run while capacity is lacking โ€” there is no three-year deadline for protected parties. Children have until their 21st birthday, and CICA assault claims have a two-year limit. See our time limits guide.

Brain injury severity at a glance

The table below sketches how injuries are commonly grouped. It is a simplified guide only โ€” your own diagnosis depends on specialist medical assessment.

Brain injury categories, typical effects and likely needs
CategoryTypical effectsLikely support needs
Minor head injury / concussionHeadache, dizziness, nausea; usually short-lived and fully resolvingRest, monitoring and reassurance; rarely long-term
Mild traumatic brain injuryBrief loss of consciousness; lingering memory, concentration, mood or fatigue problemsPhased return to work, neuropsychology input, time to recover
Moderate to severe brain injuryLasting cognitive, physical or personality change; difficulty working or living independentlyRehabilitation, ongoing therapies, support workers, possible adaptations
Very severe brain injuryProfound disability; little or no independence; may lack mental capacityLifelong 24-hour care, case management, accommodation, Court of Protection deputy

Early rehabilitation, interim payments and the Rehabilitation Code

In a serious case, getting the right rehabilitation early can change the outcome more than the final cheque ever will. UK practice is shaped by the Rehabilitation Code, a voluntary framework under which the claimant's solicitor and the defendant's insurer are encouraged to work together to assess and fund rehabilitation as soon as possible โ€” rather than waiting years for the claim to conclude. Where liability is reasonably clear, your solicitor can also seek interim payments: advance instalments of compensation paid before final settlement, which can fund therapy, care, equipment or suitable accommodation when they are needed most.

For a brain injury, the most valuable thing a claim can deliver is rarely the final settlement โ€” it is the rehabilitation, care and certainty that arrive along the way. The law is built to get those things moving early.

How general damages are valued

The award for the injury itself โ€” general damages for pain, suffering and loss of amenity โ€” is valued using the Judicial College Guidelines, which set out brackets for different injuries. For brain damage the structure runs from relatively modest sums for a minor head injury with a good recovery, upward through moderate and moderately severe brain damage, to substantial figures for very severe brain damage with profound, lasting disability. As a very rough, heavily caveated illustration, minor head-injury awards may be measured in the low thousands of pounds, while very severe brain-injury brackets can reach several hundred thousand pounds.

Please treat any figure as illustrative only. The Guidelines are updated periodically, every case turns on its own medical evidence, and โ€” as explained above โ€” in serious cases the financial losses are usually far larger than the general-damages award. A specialist solicitor is the only reliable way to value a real claim.

Head injuries caused by an assault (the CICA route)

If a head or brain injury was caused by a violent crime, there may be no insured driver or solvent business to claim against. In that situation you may be able to claim through the Criminal Injuries Compensation Authority (CICA), a government-funded scheme that pays compensation to blameless victims of violent crime โ€” even where the attacker is never identified or convicted. The CICA scheme has its own tariff and rules, and a shorter two-year time limit from the incident, so it is important to take advice quickly. You can read more about the routes available in our claim process guide.

Frequently asked questions

How much compensation can I get for a brain injury?

It depends entirely on severity and the lasting effect on your life and finances. Compensation has two parts: general damages for the injury itself, valued using the Judicial College Guidelines, where brackets run from a few thousand pounds for a minor head injury to several hundred thousand for very severe brain damage; and special damages for financial losses, which in serious brain-injury cases are often far larger and can include lifelong care, lost earnings, accommodation and therapies. Only a specialist solicitor, with expert medical evidence, can value your own claim.

Is there a time limit to claim for a head injury?

For an adult with mental capacity, you generally have three years from the date of the accident (or the date you knew the injury was linked to it) to start a court claim, under the Limitation Act 1980. Crucially, if the injured person lacks the mental capacity to manage their own claim, the three-year clock does not run for as long as they lack capacity, so there is no ordinary time bar. Different rules apply to children and to assault claims through CICA. See our time limits guide.

What if the injured person can't manage their own affairs?

Where a brain injury leaves someone unable to make decisions for themselves, the Mental Capacity Act 2005 applies. They are treated as a protected party, and a litigation friend (often a family member) conducts the claim on their behalf with the court's oversight. If a large award needs managing, the Court of Protection can appoint a deputy to look after the person's property and finances. The limitation clock does not run while capacity is lacking.

Do I need a specialist solicitor for a brain injury claim?

Strongly recommended. Serious head and brain injury claims are among the most complex and highest-value personal injury cases, needing multi-disciplinary expert evidence from neurologists, neuropsychologists, care experts and occupational therapists, plus early rehabilitation and interim payments. A solicitor who specialises in brain injury work, ideally accredited and familiar with the Rehabilitation Code, is far better placed to secure proper rehab and full compensation. Check any solicitor on the SRA register. See choosing a solicitor.

Can I claim for a head injury from an assault?

Yes. If your head or brain injury was caused by a violent crime, you may be able to claim through the Criminal Injuries Compensation Authority (CICA), a government scheme, even if the attacker is never caught or has no money. The CICA time limit is normally two years from the incident, which is shorter than an ordinary injury claim, so seek advice quickly. You can still pursue a civil claim too where there is an insured or solvent defendant.

What support is available besides compensation?

Headway, the brain injury association, offers information, helpline support and a network of local groups for survivors and families across the UK. The NHS provides neurorehabilitation, and your solicitor can often arrange private rehab early through interim payments. For free general guidance on your rights you can contact Citizens Advice, and GOV.UK explains the CICA scheme. Always check a solicitor on the SRA register or the Law Society's Find a Solicitor.

Get help from official, free sources

  • Headway โ€” the brain injury association โ€” helpline, information and local support groups
  • Solicitors Regulation Authority (SRA) โ€” check a solicitor is regulated
  • The Law Society โ€” Find a Solicitor โ€” accredited PI and brain-injury specialists
  • GOV.UK โ€” Criminal Injuries Compensation (CICA) โ€” for assault-related injuries
  • Citizens Advice โ€” free, impartial guidance on your rights