Discover what evidence you need before filing a small claim in England and Wales. A practical guide covering documents, photos, correspondence and more.

Evidence you need before filing a claim

Before you spend time and money pursuing a small claim through the courts, one of the most important steps you can take is gathering solid, well-organised evidence. Without it, even the most legitimate grievance can fall apart in front of a judge. Courts in England and Wales expect claimants to back up what they say with documentation, and the stronger your paper trail, the more confident you can feel about the outcome.

This guide walks you through the types of evidence you should collect, how to organise it, and what to do before you formally issue a claim. Whether you are chasing an unpaid invoice, seeking a refund for shoddy work, or claiming compensation for damaged goods, the principles are the same: document everything, keep it organised, and act early.

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Why evidence matters in small claims

The small claims track, used for most disputes under £10,000 in England and Wales, is designed to be accessible to people without legal representation. However, “informal” does not mean “evidence-free.” Judges still weigh up what each side presents, and if your word is simply pitted against the defendant’s, the outcome becomes unpredictable.

Good evidence does several things for you:

• It demonstrates that your version of events is credible and supported by facts.
• It shows the court a clear timeline of what happened and when.
• It can prompt the other side to settle before the case ever reaches a hearing.
• It helps you calculate exactly how much you are owed, including any interest.

The Civil Procedure Rules (CPR) govern how claims are handled in England and Wales. Familiarising yourself with the basics — particularly the guidance on the small claims track — is a sensible first step.

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Contracts and written agreements

If your dispute involves goods, services, or money owed, the starting point is almost always a contract. This does not have to be a formal, signed document — a contract can exist via an email exchange, a WhatsApp message, or even a verbal agreement confirmed in writing afterwards.

What to gather:

• Any signed contracts or terms and conditions
• Written quotes or estimates that were accepted
• Order confirmations, receipts, or invoices
• Email or text threads in which the agreement was discussed or confirmed
• Screenshots of online transactions or booking confirmations

If you have a verbal agreement with no written record, think carefully about whether there are any indirect references to it — a payment you made, a follow-up email asking about progress, or a text acknowledging the work to be done. These all help build a picture.

Tip: Export email chains as PDFs and number each page sequentially. Courts appreciate clear, easy-to-follow bundles rather than loose printouts in random order.

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Financial records and proof of payment

To prove how much you are owed — or how much you have lost — you need to show the court what money changed hands and when.

Useful documents include:

• Bank statements highlighting relevant transactions
• PayPal, Stripe, or other payment platform records
• Receipts or proof of purchase
• Invoices you issued (if you are a trader chasing payment) or received (if you are a consumer seeking a refund)
• Records of any partial payments already made

If you are claiming interest on an unpaid debt, you will also need to show the original amount owed and the date it became overdue. The ClaimsPilot interest calculator can help you work out how much statutory interest has accrued on top of the principal sum, which is particularly useful when preparing your claim particulars.

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Photographs, videos, and physical evidence

In disputes involving property damage, defective goods, or poor workmanship, visual evidence is often the most persuasive material you can present. A photograph taken the day after a trader left your kitchen half-finished is worth far more than a written description of it six months later.

Best practices for photographic evidence:

1. Take photographs as soon as possible after the problem arises — ideally with the date and time stamp visible on the image.

2. Use a consistent device so the metadata (which records when and where a photo was taken) is easy to verify.

3. Capture wide shots to establish context, as well as close-ups of specific defects or damage.

4. If relevant, photograph any product packaging, serial numbers, or safety markings.

5. Where video is more appropriate — for example, demonstrating a fault with a machine or appliance — keep clips short, focused, and clearly labelled.

Physical items, such as a faulty product you wish to return or a piece of damaged property, should be preserved in the condition they were in when the dispute arose. Do not attempt repairs before the case is resolved, as this could undermine your position.

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Communications with the other party

One of the most valuable categories of evidence is the correspondence between you and the person or business you are claiming against. This trail shows the court that the problem is real, that you tried to resolve it, and that the other side either failed to respond or refused to cooperate.

Save and organise:

• All emails, including automated replies and acknowledgements
• Text messages and instant messages (take screenshots and note the date)
• Letters sent and received — scan physical letters and keep the originals
• Notes from telephone conversations (write these up promptly, noting the date, time, who you spoke to, and what was said)
• Any formal complaints you submitted, along with responses

Crucially, you should also send a letter before action (sometimes called a “letter before claim”) before you issue proceedings. This is a formal notice giving the other party a final opportunity to resolve the matter — typically 14 days — before you file with the court. Not only is it required under the Pre-Action Protocol for Debt Claims and encouraged more broadly, but a well-drafted letter can often prompt settlement without any need for court at all.

You can use the ClaimsPilot letter before action tool to generate a clear, professionally worded letter tailored to your situation. Keep a copy and note the date it was sent — this document itself becomes part of your evidence bundle.

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Third-party evidence and witnesses

Sometimes your own documents are not enough to tell the full story. In those cases, evidence from a neutral third party can carry considerable weight.

Types of third-party evidence:

• Witness statements from people who saw the goods or services in question, observed the defective work, or were present during key conversations. Witnesses should provide a signed, written statement setting out what they personally saw or heard.
• Expert reports — for higher-value or technical disputes, an independent expert (such as a surveyor, tradesperson, or IT specialist) can assess the quality of work and provide a written opinion. Note that expert evidence in small claims is usually subject to court permission.
• Trading Standards reports or ombudsman decisions if a formal complaint has already been investigated by a relevant body.
• Online reviews left by others reporting the same issue — not always admissible on their own, but useful as supporting context.

If you are relying on a witness, speak to them early and confirm they are willing to help. Courts may ask witnesses to attend the hearing in person.

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Organising your evidence bundle

Once you have gathered your documents, take time to organise them properly before you file. A well-presented evidence bundle signals to the court — and the defendant — that you are serious and prepared.

A simple approach:

1. Create a cover sheet with your name, the defendant’s name, and a summary of the claim.

2. Organise documents chronologically, starting with the original agreement and ending with your letter before action.

3. Number every page sequentially.

4. Prepare a brief index listing each document and its page number.

5. Keep both a physical copy and a digital copy saved securely.

If the matter proceeds to a hearing, you will typically need to provide copies for the court and the defendant. The HM Courts & Tribunals Service guidance on small claims provides further detail on what to expect during the process.

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Ready to take the next step?

Gathering your evidence is the foundation of a successful claim — but it is only the beginning. Once you have your documents in order, you can send a formal letter before action, calculate the interest you are owed, and prepare to file with confidence.

ClaimsPilot gives you the tools to handle every stage of your small claim in one place, from drafting your letter before action to building your claim particulars.

Start your claim with ClaimsPilot →
This guide is for informational purposes only and does not constitute legal advice. For complex disputes, consider speaking with a qualified solicitor.