ABOUT gb²

Expert Insight. Global Reach. Trusted Results.
gb² delivers high-quality, high-value quantum and delay expertise to the construction and engineering industries worldwide. Our reputation is built on clarity, precision, and practical advice.

Clarity in Complexity. Confidence in Resolution.

Dedicated to excellence

gb² is a highly specialised consultancy service where partners guarantee excellence by being fully involved throughout every stage of the commission. Lean, flexible and highly motivated in helping you achieve the best solution. Our role is to skilfully guide you through every quantum aspect of dispute avoidance and dispute resolution based on thorough and accurate forensic investigation and analysis.

Realistic and fair

Our partners have a vast amount of experience working on some of the world’s largest and most complex engineering and construction projects on behalf of international lawyers, owners, contractors and consultants. Having worked for and within both employer and contractor organisations, we have a rare impartiality and insight enabling us to accurately measure client expectation to ensure we achieve results that are both realistic and fair.

Expert witness

Our long-standing expertise and reputation for objectivity means we are regularly appointed to act as an expert witness in intricate and often high-profile engineering and construction disputes. We have testified in all forms of dispute resolution including litigation, arbitration, adjudication and before dispute avoidance boards.

Our team

gb² has an experienced team at all levels. We have the resources to work with you in any capacity, whether the task in hand is large or small; irrespective of geography, sector of the industry or complexity of the project. Our increasing resources allow us to give you the time and level of dedication to deliver an outstanding service.

gb² Worldwide

London, UK

Leeds, UK

Brisbane, Australia

Sydney, Australia

Melbourne, Australia 

Perth, Australia

Christchurch, New Zealand

Dubai, United Arab Emirates

Meet the Team

Client comments

Wendy MacLaughlin,
Consulting expert
"Wendy MacLaughlin stands out in the international construction market for her expert delay analysis on major projects. Our market sources unequivocally agree that "she is one of the best delay experts in the market"
Colin Byford,
Consulting expert
"Colin Byford is "a leading star in the industry", recognised for his excellent independent expert quantum witness testimony and "ability to get to the point very quickly"
Charles Gurnham,
Senior Partner
"Charles Gurnham is a go-to name in the construction industry, and the founder of gb2. Charles lends his expertise to contractors in international complex engineering and building projects, with a speciality in forensic examination."
Derek Sharp,
Senior Partner
“Derek is especially versed in delay and disruption analysis, as well as planning and design management"
Conrad Bromley,
Senior Partner
"Conrad is well-known and highly regarded in the Dubai construction market"
Ahmed Elkordy,
Partner
"With close to 20 years of experience, Ahmed Elkordy remains a favourite with his peers and clients who praise his drafting skills and ability to simplify complex delay matters."
Mark Keeton,
Partner
"A rising star", Mark Keeton receives market commendation for his "detail-oriented and hard-working approach". Mark is a seasoned quantum expert acting on construction projects across a wide array of sectors.
John Fagan,
Partner
"John Fagan comes highly recommended for peers and clients alike for "his initiative in ensuring efficient delivery of comprehensive reports" in complex disputes involving delay matters."

Trusted Advisors in Cost, Delay, and Claims Analysis

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