The Barrister's Toolkit: Selecting the Right Expert Witness

Selecting the right expert can make or break your case.

Final account disputes are often some of the most complex and contentious in construction law. They involve a variation of delays and counterclaims which include technical detail and commercial pressure. For barristers navigating this terrain, a credible and clear quantum expert witness is indispensable.

Why Final Account Disputes Need Expert Witness Support

Final accounts require interpretation of contractual intent, records, and valuation standards, all of which must stand up to legal scrutiny.

What to Look for in a Quantum Expert Witness

1. Independence

   • Courts and tribunals place great weight on the perceived impartiality of expert witnesses.

   • The expert must serve the court and not the client’s commercial agenda.

2. Clarity and Communication

   • Even the most accurate quantum analysis can fail if it is buried in jargon or poorly structured.

   • The best experts explain complex issues simply,  in writing and on the stand.

3. Experience with CPR Part 35 (or equivalent)

   • Familiarity with legal obligations for expert evidence is essential.

   • Look for professionals with a proven history of court-ready reports and oral testimony.

4. Ability to Handle Cross-Examination

   • Calm under pressure, able to defend conclusions with logic and consistency.

   • Confidence without arrogance.

Red Flags to Avoid

• Vague or overly aggressive assumptions

• Lack of courtroom or adjudication experience

• Reports that read more like advocacy than analysis.

Barristers need more than figures — they need clarity, independence, and courtroom composure. The right expert helps you build a winning strategy, not just a report.

Click here to get support in selecting an expert for your next dispute.