David Barry



Managing Director, Delay Expert, Testifying Expert

David Barry is a managing director in the Expert Services practice, based in the London office. He is one of the world’s preeminent construction experts, and he was named Who’s Who Legal’s Construction Expert of the year in both 2020 and 2018.

He is very highly regarded as both a construction management and delay expert and is renowned for his independence and integrity.

David has over 30 years of program, project and construction management experience, spanning a wide range of industries that include major civil, commercial, environmental, industrial, institutional, process and energy works.

Prior to joining Kroll, David was the founder and chairman of Blackrock Expert Services, which was acquired by Kroll in 2020.

As a project manager, David specializes in using critical path method scheduling as the principal tool in managing complex construction projects and programs. As an expert, he has considered and reported upon issues such as project and construction management performance, as well as acceleration, concurrency, delay, disruption, float ownership, mitigation responsibility, resource usage and other planning issues. David has extensive testifying experience.

His experience is wide ranging and includes airports, stadiums, highways, bridges, tunnels, light and heavy rail transportation systems, hospitals, commercial buildings, power generating facilities, manufacturing and process plants, oil and gas facilities and shipbuilding.

David also acts as a dispute advisory board member, arbitrator and mediator. He has had a number of appointments as court- and tribunal-appointed expert.

Construction Expert Services

Expert analysis, testimony and advice for construction and engineering disputes and projects.

Commercial and Economic Disputes Expert Services

Kroll excels in assessing financial loss and damages in complex commercial litigation, and offers robust analysis and testimony in M&A and post-acquisition matters.

Expert Services

Independent expert analysis, testimony, advice and investigations for complex disputes and projects.