What Evidence Do You Need for a Personal Injury Claim?

ASL Solicitors

28th March 2026

If you have been injured due to someone else’s negligence, gathering the right evidence is one of the most important steps in making a successful personal injury claim. Whether your accident happened at work, on the road, or in a public place, the strength of your evidence will directly affect your chances of securing compensation.

In England and Wales, personal injury claims are governed by a combination of statutory law and case law. Understanding what evidence is required, how to collect it, and how different types of claims work can put you in a much stronger position.

At ASL Solicitors, we specialise in personal injury claims and have a proven track record of securing compensation for our clients. If you believe you have a claim, you can get in touch with us here for an honest and realistic assessment.

The Legal Framework for Personal Injury Claims

To succeed in a personal injury claim, you must prove three key elements:

1. Duty of care – The defendant owed you a duty of care
2. Breach of duty – That duty was breached
3. Causation – The breach caused your injury

These principles are rooted in negligence law, particularly following the landmark case of Donoghue v Stevenson [1]. In practical terms, this means showing that someone failed to take reasonable steps to keep you safe.

Several key pieces of legislation apply depending on the type of claim:

Health and Safety at Work etc. Act 1974 – Governs employer responsibilities [2]
Occupiers’ Liability Act 1957 – Applies to accidents on premises open to the public [3]
Occupiers’ Liability Act 1984 – Covers limited duties to trespassers [4]
Road Traffic Act 1988 – Relevant for road accidents [5]
Limitation Act 1980 – Sets the general 3-year time limit for claims [6]

These laws shape what evidence is needed and how liability is assessed.

Types of Evidence You May Need

There is no single piece of evidence that guarantees success. Instead, claims are built using a combination of supporting materials that together demonstrate what happened and who was at fault.

Medical Evidence

Medical records are often the most important evidence in any claim. These may include GP records, hospital notes, and specialist reports. An independent medical expert will usually assess your injuries and provide a report confirming diagnosis, severity, and long-term impact. Without medical evidence, it is very difficult to prove that your injury exists or that it was caused by the accident.

Photographs and Videos

Photographic evidence can be extremely persuasive. This might include images of the accident scene, your injuries, or any hazards such as broken pavements or faulty equipment. Where available, video footage such as CCTV or dashcam recordings can provide clear, objective evidence of how the incident occurred.

Witness Statements

Independent witnesses can strengthen your case significantly. Their statements help confirm your version of events and can be particularly valuable where liability is disputed. It is best to collect witness details as soon as possible after the incident while events are still fresh in their memory.

Accident Reports

If your accident happened at work, it should be recorded in the company accident book as required under health and safety regulations [2]. These reports can provide contemporaneous evidence that the incident occurred.

Financial Evidence

To claim compensation for financial losses, you will need proof such as payslips, invoices, or receipts. This may include loss of earnings, medical expenses, travel costs, and care or rehabilitation costs.

Expert Evidence

In more complex cases, expert reports may be required. These could include accident reconstruction specialists, engineers, or occupational health experts.

CCTV and Data Protection Laws

CCTV footage can be crucial in proving how an accident occurred. However, its use is governed by UK data protection laws, including the Data Protection Act 2018 [7]. You may be entitled to request footage through a Subject Access Request, often known as a SAR, [7]. Acting quickly is important, as many systems automatically overwrite recordings within days or weeks.

Once legal proceedings are anticipated, parties must comply with disclosure obligations under the Civil Procedure Rules [8]. This includes preserving and disclosing relevant documents such as CCTV footage. In practice, CCTV can be particularly important in workplace accidents, slips and trips in shops, and incidents in public places. A solicitor can act quickly to request this evidence before it is lost.

How to Gather Evidence After an Accident

The steps you take immediately after an accident can make a significant difference to your claim.

Where possible, you should:

Take photographs of the scene and your injuries
Report the incident to the relevant party
Collect witness names and contact details
Seek medical attention as soon as possible
Keep records of any expenses or losses

Early action helps preserve evidence and reduces the risk of disputes later on.

Differences Between Types of Claims

Accidents at Work

Employers have strict legal duties under the Health and Safety at Work etc. Act 1974 [2]. Evidence in these claims often includes risk assessments, training records, maintenance logs, accident book entries, CCTV footage, and witness evidence from colleagues.

In some cases, there may also be internal investigations or reports from the Health and Safety Executive. Claims against employers often depend heavily on whether proper systems were in place, whether staff were trained correctly, and whether equipment was maintained.

Public Liability Claims

If you trip on a defective pavement or are injured in a public place, your claim may be against a local authority, business, or property owner.

Evidence often focuses on maintenance records, inspection schedules, photographs of the defect, reports of previous complaints, and whether the hazard had been present long enough that it should have been dealt with. Local authorities and occupiers may rely on statutory defences if they can show reasonable maintenance [3].

If you need more information about Public Liability Claims, you can read our guide on “Can you claim compensation for an accident in a public place“.

Road Traffic Accidents

These claims rely heavily on dashcam footage, police reports, vehicle damage, witness accounts, and insurance documentation, supported by obligations under the Road Traffic Act 1988 [5]. The type of evidence can vary depending on whether you were a driver, passenger, cyclist, motorcyclist, or pedestrian.

Key Factors That Affect Success

Several factors influence whether a claim is successful and how much compensation is awarded.

Liability is central. If the defendant can show they acted reasonably, your claim may fail. Good evidence helps establish whether there was a clear breach of duty.

Consistency is also important. If your account of events changes or conflicts with other evidence, this can weaken your case.

Timing matters. Under the Limitation Act 1980, you generally have three years to bring a claim [6]. There can be exceptions, but delay can make evidence harder to obtain and witnesses harder to trace.

Finally, the quality of your evidence can make or break your case. Strong, well-documented evidence often leads to quicker settlements and a stronger negotiating position. Ministry of Justice data highlights how civil claims are assessed and resolved each year [9].

How ASL Solicitors Can Help

We understand that gathering evidence can feel overwhelming, especially when you are recovering from an injury. At ASL Solicitors, we guide you through every step of the process. We will assess your case, advise on the evidence required, and handle communication with insurers and defendants. Our goal is to secure the compensation you deserve.

If you think you may have a claim, contact us today. We will provide an honest view on whether your case is viable. If we believe your claim can be pursued, we can start building your case and guide you through the legal process.

Frequently Asked Questions

You can begin a claim with limited evidence, but strong supporting documentation will significantly improve your chances of success. In most cases, the more evidence you have from the outset, the easier it is to prove what happened and who was responsible.

Your claim can still proceed. Other evidence such as medical records, photographs, CCTV footage, and expert reports can support your case. Independent witnesses are helpful, but they are not essential in every claim.

Yes, you can request CCTV footage if you appear in it, usually through a Subject Access Request under data protection law. It is important to act quickly because many systems automatically delete footage after a short retention period.

In most cases, you have three years from the date of the accident or from the date you became aware that your injury was linked to someone else’s negligence. There are some exceptions, so it is best to seek legal advice early.

Yes, your employer will usually become aware of the claim. However, employers are expected to have liability insurance in place, and you should not be treated unfairly simply because you have made a legitimate claim.

Medical evidence is often the most important because it proves the nature and extent of your injury. However, the strongest claims usually combine medical records with photographs, witness evidence, accident reports, CCTV footage, and proof of financial losses.