Understanding Limitation Periods in Personal Injury and Medical Negligence Claims

When someone suffers an injury due to the negligence of another person or organisation, it is natural for their first priority to be recovery. Medical appointments, rehabilitation, time away from work and the emotional impact of an accident can take up significant time and energy. Legal action is often the last thing on someone’s mind.

However, in personal injury and medical negligence claims there are strict legal time limits that determine how long a person has to bring a claim. These are known as limitation periods. If a claim is not started within the relevant limitation period, the injured person may lose the right to pursue compensation altogether.

Understanding limitation periods is extremely important. At Hopkins Solicitors, our personal injury and medical negligence team regularly advises clients who were unaware of these time limits until months or even years after their accident.

What is a Limitation Period?

A limitation period is the legal deadline within which a claim must be started in court. In England and Wales, these deadlines are set out in the Limitation Act 1980. In most personal injury and medical negligence cases, the limitation period is three years. This means that court proceedings must generally be issued within three years of the relevant date. If proceedings are not issued within this period, the defendant can rely on the limitation defence and ask the court to dismiss the claim.

While three years may seem like a long time, it can pass surprisingly quickly. Injury claims often require medical evidence, expert reports and negotiations with insurers. These steps can take months or even years to complete, which is why it is always advisable to seek legal advice as early as possible.

The standard three-year rule

In most personal injury cases, the limitation period runs for three years from the date of the accident.

Examples include:

• Road traffic accidents
• Workplace accidents
• Slips, trips and falls in public places
• Accidents caused by defective products
• Dog bite injuries
• Accidents in shops, restaurants, or other premises

For example, if someone is injured in a road traffic accident on 10 April 2026, they would normally have until 10 April 2029 to issue court proceedings. This does not simply mean contacting a solicitor within three years. The claim must be formally issued at court before the limitation deadline expires. Because preparing a claim takes time, waiting until the final months of the limitation period can significantly limit the options available for gathering evidence and negotiating settlement.

Date of knowledge when the injury was not immediately obvious

Not every injury is immediately apparent. In some cases, a person may not realise they have suffered an injury until months or even years after the negligent event. For this reason, the law recognises something called the “date of knowledge.”. The three-year limitation period may begin from the date when the injured person first knew (or reasonably should have known):

1. That they had suffered a significant injury
2. That the injury may have been caused by someone else’s negligence
3. The identity of the person or organisation responsible

This situation often arises in medical negligence claims or in cases involving conditions that develop gradually. For example, a patient may undergo surgery and only later discover that a complication occurred due to negligent treatment. In such circumstances, the limitation period may begin when the patient first becomes aware that the injury was linked to potential negligence. Determining the date of knowledge can be legally complex, which is why specialist legal advice is essential.

Limitation periods in medical negligence claims

Medical negligence claims usually follow the same three-year limitation period, but identifying the starting point can be more complicated than in accident cases.

Examples of medical negligence cases include:

• Delayed diagnosis of serious conditions such as cancer
• Surgical errors
• Incorrect medication or dosage
• Failure to refer a patient for appropriate treatment
• Negligent care during childbirth

In many cases, the date of knowledge may arise when:

• A doctor identifies that earlier treatment may have been negligent
• A patient obtains their medical records
• Another medical professional provides an opinion suggesting negligence

Medical negligence claims often require expert evidence from independent specialists. Gathering this evidence can take time, which is why early legal advice is particularly important.

Limitation periods for children

Different rules apply when the injured person is a child under the age of 18. Children cannot legally bring a claim on their own behalf. Instead, a parent or guardian may bring a claim for them as a litigation friend.

In terms of limitation the three-year limitation period does not begin until the child turns 18. This means the child normally has until their 21st birthday to issue court proceedings. For example, if a child is injured in an accident at age 10, they will usually have until age 21 to bring a claim. However, it is often beneficial for a claim to be pursued sooner rather than later. Evidence is easier to gather closer to the time of the accident and compensation can help fund treatment, rehabilitation, or support during childhood.

Limitation and mental capacity

If an injured person lacks mental capacity, the limitation period may not run while they remain without capacity. This can apply to individuals who:

• Have a severe brain injury
• Suffer from certain learning disabilities
• Have conditions affecting their ability to manage legal matters

In these circumstances, there may effectively be no limitation period while the person lacks capacity. A claim can instead be brought by a litigation friend, often a family member or professional representative. If the injured person later regains mental capacity, the three-year limitation period may begin from the date their capacity returns.

Fatal accident claims

When a person dies as a result of negligence, certain family members may bring a claim under the Fatal Accidents Act 1976. In these cases, the limitation period is typically three years from the date of death, or, three years from the date of knowledge that the death was caused by negligence, if later. Claims may be brought by the deceased person’s estate or by dependants such as spouses, partners, or children. Fatal accident claims can include compensation for financial dependency, funeral expenses and the loss of a loved one’s support.

What happens if the limitation period is missed?

If court proceedings are not issued within the limitation period, the defendant can raise a limitation defence. This means the court may refuse to allow the claim to proceed, even if the injured person would otherwise have succeeded. In some circumstances, the court does have discretion to allow a claim to continue despite being outside the limitation period. However, this discretion is only used in limited situations and cannot be relied upon.

The court will consider factors such as:

• The length of the delay
• The reasons for the delay
• Whether evidence is still available
• Whether the defendant would suffer prejudice

Because the outcome of these applications is uncertain, it is always best to start a claim well before the limitation deadline.

Why Acting Early Is Important

Although three years may seem like a long time, building a strong personal injury claim takes preparation. A solicitor may need to:

• Obtain medical records
• Secure independent medical expert reports
• Gather witness evidence
• Review accident reports or CCTV footage
• Obtain employment or financial records
• Investigate liability with insurers or organisations

In some cases, rehabilitation or medical treatment may also be arranged while the claim is ongoing. Starting the process early allows time for proper investigation and often increases the chances of resolving the claim successfully.

How Hopkins Solicitors Can Help

At Hopkins Solicitors, our personal injury and medical negligence team understands that bringing a claim can feel daunting, especially when someone is already coping with the effects of an injury.

We guide clients through the legal process with clarity and support. We help clients understand their rights, gather the evidence needed to support their claim and ensure that important deadlines such as limitation periods are not missed.

If you have been injured due to somebody else’s negligence and would like to discuss making a claim, please click the “Request a Callback” button or give us a call on 01623 468 468.