Do I need an expert for a defective goods claim?
Ask your solicitor to commission an independent technical expert if the defect, its cause or the proposed remedy needs specialist investigation. Agree the questions and preserve samples before testing. Using expert evidence in court requires permission. Factory records can provide background from Cambridge China Bridge.
Decide what an expert would resolve
For a business claim against a UK seller, start with your solicitor and the disputed technical question. A wrong colour visible against the agreed specification may need different evidence from a component that fails after use. Ask whether specialist investigation would materially improve the decision to pursue or settle the claim, rather than commissioning a broad report automatically.
Our faulty goods and claims guide covers identifying the seller and responding to defective deliveries. This guide adds the expert-evidence preparation for proceedings in England and Wales. Expert evidence must be restricted to what is reasonably required to resolve the proceedings.
Give the expert a technical brief
Ask your solicitor to define the remit in writing: what failed, how it differs from the agreed specification, plausible causes, whether handling or storage could explain it, and whether repair is technically suitable. Ask what the inspected samples can establish about the wider batch. Leave the choice of legal claim and remedy to your solicitor.
Supply the contract, specification revisions, approved sample, inspection records, photographs and a chronology of delivery, storage and use. Include the seller's explanation and evidence that challenges your account. Use our product specification guide to organise the comparison. Agree an initial review, proposed tests and a further-work decision before committing to extensive investigation.
Preserve samples before testing
Set aside suspect goods, apparently sound comparison units and the approved sample. Keep packaging and batch labels. Photograph each item's condition, label it distinctly and record where it came from, who handled it and how it was stored. Preserve original files and record any earlier repair or testing. Our sample chain of custody guide explains the handover record.
Before cutting, dismantling or otherwise consuming a sample, ask your solicitor and expert to agree a testing plan and discuss inspection access with the seller. Record the selection method, proposed destructive work and what will remain available for re-examination. Avoid sending every retained item for destructive testing or returning the disputed stock before deciding what evidence to keep.
Check independence and report suitability
Ask about product-specific experience and any relationship with the buyer, seller, factory or earlier inspector. A sourcing inspection can supply useful facts, but ask your solicitor whether its author is suitable for the proposed expert role. Under Practice Direction 35, expert opinions should be independent, objective and unbiased; experts should not act as advocates and should consider facts that weaken their opinions.
For a report intended for court, ask your solicitor to check compliance with Practice Direction 35, including addressing it to the court and verifying it with a statement of truth. Ask the expert to distinguish observations from assumptions, explain test limitations and identify unanswered questions. An inconclusive result is a reason to reassess the evidence, not to press for a favourable conclusion.
Plan court permission before further spending
Commissioning an investigation does not secure permission to use its report in proceedings. Calling an expert or putting an expert report in evidence requires the court's permission. The application must provide a cost estimate, identify the expert field and issues, and name the proposed expert where practicable. Ask your solicitor to prepare that justification before expanding the work.
The court may direct a single joint expert where parties wish to submit expert evidence on the same issue. Its permission decision considers circumstances including proportionality and the complexity of the issue. Ask whether a joint instruction could suit the dispute. Budget for the work without assuming full reimbursement: the court may limit expert fees and expenses recoverable from another party.
Frequently asked questions
Do I need an expert before contacting the UK seller?
Do not wait for a report to raise the problem. Ask your solicitor whether a technical dispute needs specialist investigation, and preserve the goods while that decision is made.
Can I use my factory inspection report in court?
Give it to your solicitor as background. If you propose to rely on it as expert evidence, court permission is required; your solicitor should check its author, remit and report format.
Should I let the expert destroy a defective sample?
Agree the purpose and method first. Record the sample's identity and condition, discuss seller inspection access through your solicitor, and retain material for re-examination where practicable.
Will the seller have to pay my expert's fees?
Do not assume full reimbursement. The court may limit expert fees and expenses recoverable from another party. Ask your solicitor to assess the cost before commissioning further work.