Evidence Required for Online Purchase Contract Claims

When you pursue a legal claim arising from an online purchase contract in England and Wales, you must present clear, credible evidence to support your case. Whether you are claiming for breach of contract under the Consumer Rights Act 2015, misrepresentation, unfair terms, non‑delivery, faulty goods, or inadequate services, a tribunal or court will assess the evidence presented to decide whether you are entitled to remedies such as refund, compensation or contract enforcement. This article sets out the kinds of evidence most commonly required, why they matter, how to organise them effectively, and practical steps to strengthen your claim.

What You Must Prove in Contract Claims

A claim for breach of contract generally requires evidence of:

• The existence and terms of a legally binding contract
• A breach of those terms by the trader
• Loss or damage suffered as a result of the breach

For other types of claims, such as misrepresentation or unfair contract terms, additional elements such as false statements or imbalance in terms must also be supported by evidence.

Core Categories of Evidence

1. Contract Documentation

The foundational documents for any claim are those that show what you agreed with the seller. This includes:

• Order confirmations, invoices and receipts showing what was purchased and the amount paid
• Terms and conditions or contractual terms provided at the point of sale or linked on the website
• Screenshots or printouts of online product descriptions and specifications

These materials help demonstrate the contractual obligations - what the seller promised and what you agreed to buy.

2. Communications and Correspondence

Communications between you and the seller are often critical in explaining:

• Pre‑contract representations made by the trader
• How and when orders were agreed
• Any promises or assurances about delivery, features, warranties, or timing
• Complaints made after receipt of goods or services

These might include emails, text messages, platform messages (e.g. marketplace chats), or written letters. They can support both breach of contract claims and misrepresentation claims by showing what was stated and relied upon.

Evidence for Specific Claim Types

Breach of Contract Evidence

In a breach of contract claim, you must show that the seller failed to honour the contract terms. Key evidence includes:

• Proof of purchase and order details (receipts, bank or card statements)
• Descriptions and specifications from the online listing that form part of the contract
• Delivery records or lack thereof (tracking information, confirmed delivery)
• Photographs or videos of defective or non‑conforming goods

Photos and other visual material demonstrating how goods differ from their advertised condition or specifications can be particularly persuasive, especially when compared directly to screenshots of the listing.

Consumer Rights Act 2015 Claims

Under the Consumer Rights Act 2015, goods and services must meet statutory standards of quality, fitness for purpose and accuracy of description. If you pursue remedies under this Act:

• Detailed photos and videos of the goods or evidence of how services failed to meet required standards
• Expert reports where specialised testing or technical evaluation is needed
• Correspondence on complaints and attempts to resolve the issue before court action

Government guidance explains that if goods are discovered to be faulty within six months, the law presumes they were non‑conforming at delivery unless the trader proves otherwise; this shifts the burden of proof to the seller initially.

Misrepresentation Claims

To support a claim that you were induced into a contract by a false statement of fact, the evidence should show:

• The exact statement(s) made by the seller that were false
• That you relied on those statements when entering the contract
• How the false statement caused financial loss

Evidence for this may include screenshots of promotional material, written advertisements, emails or chat messages containing the statement, and documentation showing the financial impact of entering into the contract based on that information.

Unfair Terms and Unfair Commercial Practices

If you assert that standard terms are unfair or that the seller engaged in misleading or aggressive commercial practices, include:

• Copies of the terms and conditions, especially the specific clauses alleged to be unfair
• Screenshots or copies of website text where misleading actions or terms were displayed
• Evidence of how the terms created imbalance in rights or obligations

You may also refer to relevant provisions of the Consumer Protection from Unfair Trading Regulations 2008, which provide a right to redress where a prohibited practice materially influenced your decision to contract.

Supporting Proof of Loss

To quantify the impact of the breach or misrepresentation, gather evidence that shows your financial loss or detriment, such as:

• Receipts and invoices for replacement goods or expenses incurred
• Receipts for related costs such as return postage or repair quotes
• Bank or card statements showing payments made, dates and amounts

Chronologies or timelines of events may help to connect the cause of the loss to the breach or misleading conduct.

Expert and Witness Evidence

In some disputes, particularly where technical standards or complex products are involved, expert evidence can strengthen your position. An expert report can:

• Assess whether goods are faulty or services substandard
• Quantify diminution in value or cost of repair
• Provide an independent assessment of compliance with statutory standards

Witness statements from individuals involved in the transaction or who observed relevant events can also support your narrative, provided they include dates and factual observations rather than opinions.

Organising and Presenting Your Evidence

Good organisation increases the clarity and impact of your evidence:

• Create a timeline of key events (order, delivery, complaint, correspondence)
• Group documents in a logical order matching your claim points
• Keep copies of original files and ensure any screenshots show dates, names and context
• For court proceedings, follow the pre‑action protocol and Civil Procedure Rules by exchanging evidence early and clearly with the defendant and court.

Common Questions

Do screenshots count as evidence?
Yes. Screenshots of online listings, messages or terms can be admissible evidence, but they should be clear, dated and, where possible, backed up with other documentation showing context.

Can expert evidence be necessary?
Expert evidence is not always required, especially in straightforward claims. It is most useful when technical details, valuations or specialised evaluations are central to proving loss or defect.

Who has the burden of proof?
Generally, the claimant must prove their case on the balance of probabilities. Under the Consumer Rights Act 2015, some statutory presumptions in the first six months after supply can shift the initial burden to the trader to disprove a fault.

Final Thoughts

Strong evidence is essential to succeed with an online purchase contract claim in England and Wales. Collect and preserve clear contract documentation, communications, proof of breach and proof of loss, and organise them effectively. For specialised disputes, expert and witness evidence can provide valuable support. Following procedural rules, such as pre‑action conduct, and understanding how the Civil Procedure Rules apply will help you present a persuasive case to a tribunal or court. Well‑organised evidence increases your chances of securing refunds, compensation or enforcement of contractual rights.