Expert Witness

Pell Frischmann is one of the leading providers of expert witness services across engineering, transport planning, land development and within the built environment. Our independent, evidence-based analyses support clients across the planning process, including planning appeals, inquiries and examinations in public. Our flexible services include expert analysis, legal documentation, mediation support, forensic assessments, and technical guidance tailored to diverse client needs. With an expert team covering areas from structural to environmental engineering, we deliver comprehensive technical insights, support for legal disputes, and strategic advice that empowers confident decision-making.

We are frequently called upon to act as expert witnesses in litigation, both in the UK and internationally. Experienced in presenting a position statement, mediation and defending findings, our consultants can act on cases worldwide and have significant experience in conducting investigations and providing expert advisory and witness provisions.

What We Do

We provide a range of flexible services tailored to meet our clients’ diverse needs, which include but are not limited to the following:

  • Submission of written representations.
  • Expert witness advice at examinations, planning inquiries and other planning system hearings.
  • Opinion paper and expert reports.
  • Preparation of legal documentation.
  • Mediation support, including attendance and negotiation advisory services.
  • Technical guidance for clients and insurers.
  • Development of evidence-based databases.
  • Forensic analysis of engineering systems.
  • Technical support for solicitors, counsel and other planning professionals.
  • Expert witness testimony.

Our Experience

Our expert team is equipped to handle cases of all sizes and complexities across numerous disciplines within the built environment. We collaborate seamlessly, drawing on specialist support in the following areas:

Buildings
  • Buildings – Commercial
  • Buildings – Higher Education
  • Buildings – Residential
  • Composite – Steel/Concrete Construction
  • Embodied Carbon
  • Historic Structures
  • Masonry – Stone
  • Refurbishment and Reuse
  • Structural Engineering
Environmental
  • Biodiversity Net Gain
  • Carbon
  • Corrosion/Erosion
  • Environmental Engineering
  • Flood risk assessment
  • Hydrology & Hydrogeology
  • Nature-based Solutions
  • Sustainability
Highways
  • Business Case Development
  • Drainage Engineering
  • Economic Appraisal
  • Geotechnical Engineering
  • Highways Engineering
  • Road Safety Engineering
  • Structural Engineering
  • Transport Planning
  • Transport Modelling
Land Development
  • Drainage Design
  • Highway Design (for developments)
  • Surface water drainage
  • Traffic Modelling
  • Transport Planning
Water
  • Commissioning and operational matters
  • Independent checking and CAT/SILL speciality
  • Masterplanning, feasibility, concept, outline and detailed design
  • Mechanical, electrical, civil, structural, process and ICA discipline engineering
  • Non infrastructure and infrastructure clean and wastewater engineering
  • Sludge storage, treatment, digestion, drying and application