Gerry Brannigan


Gerry Brannigan leads the Buildings & Property sector for HKA’s Engineering services and is the lead building services engineering expert witness. Since 2012, he has been appointed more than 45 times as an expert witness. He has given oral evidence at arbitrations, adjudications and dispute adjudication boards. In addition, he has assisted at mediations and provided a deposition in the USA.

Gerry’s appointments have concerned disputes in different jurisdictions including: Scotland, England, Ireland, Norway, UAE, Qatar, Australia and USA Federal Court. As well as undertaking individual building services/MEP expert witness appointments, Gerry has experience of managing and co-ordinating multi-disciplinary expert teams on complex construction disputes.

Gerry is listed in Who’s Who Legal as an expert witness in Construction, Consulting and Arbitration. WWL says: “Gerry Brannigan has an in-depth knowledge and understanding of issues surrounding complex building projects and is “clear and effective under cross-examination” … [he] is described by interviewees as a “very thorough and practical” expert who can “express complex matters to the tribunal in simple language without being condescending” … [and] wins praise from respondents for his clear and strategic approach”.

Gerry continues to be involved in non-contentious building services providing specialist client advisory services and has oversight of the building services engineering design and advisory team in HKA.

Gerry has extensive skills, knowledge and expertise in building services engineering with a focus on heating, cooling, ventilation, air conditioning, controls, public health engineering, sustainability and project planning. He has particular skills including building physics, energy efficiency & sustainability, thermal modelling, building regulations and the interaction of users on the performance of buildings. He has significant experience in project management and team leadership, detailed investigations, problem solving, design quality, client briefing and scope development, site inspection, dilapidation and pre-acquisition surveys, refurbishments, project financial management, project programming and the coordination between disciplines on complex construction projects.

Qualifications BEng (Hons) Environmental Engineering
Professional Memberships CEng, FCIBSE, MASHRAE, MSoPHE, MAE, ACIArb, SCL
Gerry Brannigan HKA
Arbitration 2019
Consulting Experts 2018
Expert Highlights
  • Over 45 international expert witness appointments.
  • Proven as a credible expert witness under cross-examination.
  • Successfully advises clients regarding feasibility and project scoping.
  • Delivers decisive and clear explanations of key facts and accountability.
  • Significant building services design experience.
  • Multi-disciplinary engineering project management and design management background.
Expert Details
Location London, UK, Glasgow, UK
Services Technical
Sectors Buildings
Expert Statistics
Years of Experience 19
No. of Expert Commissions 45+
No. of Cross Examinations 3
No. of Depositions 1

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