A brain injury caused by someone else's negligence — on the road, at work, in a fall or through medical negligence — can give rise to one of the most significant personal injury claims. Compensation reflects the injury, lifelong care, lost earnings, therapies and adaptations, and is often paid partly as a lump sum and partly as periodical payments. The three-year limit can be paused where the person lacks mental capacity. Specialist legal advice is essential.
A traumatic or acquired brain injury can change a life and a family forever, and the legal claim that follows is correspondingly complex. These are not claims to handle alone, and they are not claims where round-figure "averages" mean very much: each one turns on detailed medical and care evidence about a unique set of needs. This guide explains, in plain English, how serious brain injury claims work in England & Wales and why specialist representation matters. We are an independent information service, not a law firm, and nothing here is legal advice.
Types of brain injury
Brain injuries are often divided into:
- Traumatic brain injury (TBI) — caused by an external force, such as a road collision, a fall, a blow on a building site, or an assault.
- Acquired brain injury (ABI) — including injury from a lack of oxygen (hypoxia), bleeds and other events, which can also follow medical negligence.
Effects range from mild and temporary, after a head injury with concussion, through to profound, lifelong physical, cognitive and behavioural disability. The severity, and the care it demands, determine almost everything about the claim.
How brain injury claims are valued
Compensation for the injury itself (general damages) is assessed by reference to the Judicial College Guidelines, which set brackets from minor head injury up to very severe brain damage. But in serious cases this is often the smaller part of the claim. The larger part is the financial losses (special damages), which in a life-changing injury can include:
- a lifetime of care and case management;
- lost earnings and pension, present and future;
- therapies — physiotherapy, occupational therapy, speech and language, neuro-rehabilitation;
- accommodation, adaptations and specialist equipment;
- aids to independence and support for the family.
These are built up from detailed expert evidence, which is why serious claims take time and why they are valued individually rather than from a tariff. See what compensation covers.
Lump sums and periodical payments
Serious brain injury settlements are frequently structured so that part is paid as an immediate lump sum and part as periodical payments — regular, index-linked, tax-free payments that continue for the rest of the injured person's life.
💡 Why periodical payments matter
A lump sum has to last a lifetime, and no one knows exactly how long that will be. A periodical payments order (PPO) removes that risk by guaranteeing the money for future care for life, regardless of how long the person lives or how investment returns perform. Courts often favour them in catastrophic cases precisely because they protect the injured person.
Capacity, litigation friends and the Court of Protection
Where a brain injury leaves someone unable to manage a claim or their own affairs, the law provides safeguards. A litigation friend — usually a close family member — conducts the claim on the injured person's behalf, and any settlement must be approved by the court to ensure it is in their best interests. Where compensation needs to be managed long-term, the Court of Protection can appoint a deputy, overseen by the Office of the Public Guardian. Our guide to claiming for someone who cannot claim for themselves explains these roles.
Time limits
⏳ The clock may not be running
The usual three-year limit under the Limitation Act 1980 does not run while a person lacks the mental capacity to conduct a claim — so for many seriously brain-injured claimants there is effectively no deadline for as long as that incapacity lasts. For children the clock starts at 18. Even so, take advice early: care assessments and expert evidence are easier to gather sooner. See our time limits guide.
Support beyond the claim
A claim is only part of recovery. Headway, the brain injury association, offers information and local support across the UK; the NHS provides treatment and rehabilitation; and Citizens Advice can help with benefits and practical issues. For the legal side, use the Law Society's Find a Solicitor service to find a serious-injury specialist and check they are SRA-regulated.
In a serious brain injury claim, the headline injury award is rarely the main figure. The real work — and the real value — lies in proving a lifetime of care, therapy and support, and in protecting that money for as long as it is needed.
Frequently asked questions
How much compensation is a brain injury claim worth?
Serious brain injury claims are among the highest-value personal injury claims, but there is no single figure. Compensation for the injury itself is assessed under the Judicial College Guidelines, which place brain injury in brackets from minor head injury up to very severe brain damage. The largest part of a serious claim is usually the financial losses — a lifetime of care and case management, lost earnings, therapies, accommodation and equipment — which are calculated from detailed expert evidence.
What are periodical payments in a brain injury claim?
A periodical payments order (PPO) provides part of the compensation as regular, index-linked, tax-free payments for life, rather than a single lump sum. They are common in serious brain injury cases because they guarantee that money for future care will not run out, however long the person lives. A court can order or approve a settlement that combines a lump sum with periodical payments.
Who can bring a claim if the injured person lacks capacity?
Where a brain injury means a person cannot manage the claim themselves, a 'litigation friend' — often a close relative — conducts the claim on their behalf. Any settlement must be approved by the court to protect the injured person. The Office of the Public Guardian and a deputy appointed by the Court of Protection may also be involved in managing compensation and ongoing affairs.
Is there a time limit for a brain injury claim?
Normally three years from the accident or date of knowledge under the Limitation Act 1980. Crucially, the limit does not run while the injured person lacks the mental capacity to conduct a claim, so there may be no deadline for as long as that incapacity lasts. For children, the clock starts at 18. Despite this, it is best to take advice early because evidence and care assessments take time.
Where can I get support after a brain injury?
Headway, the brain injury association, provides information and local support across the UK, and the NHS provides treatment and rehabilitation. The Brain Injury Group and Citizens Advice can also help. For the legal claim itself, use the Law Society's Find a Solicitor service to find a solicitor experienced in serious injury, and check they are SRA-regulated. We are not a law firm and do not take on claims.
Get help from official, free sources
- Judicial College Guidelines — the bracket-based valuations courts use for injuries
- Solicitors Regulation Authority (SRA) — check a solicitor or firm is regulated
- The Law Society — Find a Solicitor — find an accredited personal injury specialist
- Citizens Advice — free, impartial guidance on your rights
- NHS — treatment, and records that support your claim
Related guides: head injury claims, spinal injury claims, medical negligence claims and how compensation works.