Expert Services

What Is an Expert Witness?

An expert witness is an independent specialist with recognised expertise in a particular field who is appointed to provide impartial, evidence‑based opinion to assist in the resolution of a dispute. Unlike a factual witness, who describes what they saw or experienced, an expert witness offers professional judgement on technical, commercial, or industry‑specific matters that fall outside the knowledge of the court, tribunal, or adjudicator.

Expert witnesses must remain independent, objective, and unbiased, regardless of which party instructs them. Their overriding duty is to the tribunal or court, ensuring that their opinions are based on sound methodology, reliable evidence, and accepted industry principles.

What Are Expert Witness Services?

Expert witness services involve the preparation and presentation of specialist opinion to support the resolution of disputes in adjudication, arbitration, litigation, or other formal processes. For a construction consultancy, these services typically include:

Independent Expert Reports

Preparation of clear, structured, and fully reasoned reports on matters such as delay, quantum, defects, valuation, or professional practice. These reports form part of the formal evidence relied upon by the tribunal.

Expert Testimony

Presenting expert opinion during hearings, responding to questions from legal teams and the tribunal, and explaining complex technical issues in a clear and accessible manner.

Joint Expert Meetings & Statements

Participating in meetings with opposing experts to identify areas of agreement and disagreement, and producing joint statements where required.

Expert Determination

Acting as an independent expert jointly appointed by the parties to make a binding or non‑binding determination on specific technical or commercial issues.

Pre‑Dispute and ‘Sense‑Check’ Reviews

Providing early, informal expert input to help clients and legal teams understand the strengths and weaknesses of a claim or defence before formal proceedings begin.

Support for Legal Teams

Assisting solicitors and counsel by clarifying technical matters, reviewing evidence, and advising on the robustness of arguments being advanced.

JWE Williams Expert Services

Drawing on extensive backgrounds in quantity surveying, planning, commercial management, and contract administration, our consultants prepare expert reports covering delay, quantum, defects, and a wide range of technical matters. These analyses provide a clear, credible evidential foundation that strengthens and supports your case in any dispute‑resolution forum.

In addition to formal expert reporting, we are frequently instructed to provide independent, impartial assessments that help parties unlock disputes and move forward. This support typically includes:

Independent Entitlement Reviews

We provide objective assessments of contractors’ and subcontractors’ entitlement to additional time and money. These reviews can be delivered informally to support commercial discussions or formally as an expert determination when jointly appointed by the parties.

‘Sense‑Check’ Reviews for Legal Teams

We assist solicitors and their clients by reviewing the claims or defences being advanced, offering a clear, reasoned view on their strengths, weaknesses, and evidential robustness. This enables legal teams to provide accurate, commercially grounded advice and to shape their strategy with confidence.