Gary Blackburn

Managing Director


Gary Blackburn is a practising quantum and delay expert and highly experienced chartered quantity surveyor who has extensive knowledge of the analysis, preparation, defence, and negotiation of construction claims. He provides a practical and focused approach derived from over thirty years of experience across building, civil engineering, infrastructure, utility, rail, marine, power, process, petrochemical, and oil and gas sectors in the United Kingdom, Europe, Africa, and the Middle East.

Mr. Blackburn has experience as a dispute resolver. He typically works with leading domestic and international construction and engineering clients and legal teams to avoid, mitigate, and resolve disputes relating to matters including delay, critical path analysis, cause and effect, concurrency, claims for and rebuttal of extensions of time, disruption, acceleration, loss and expense, valuation of variations, valuation of measured works, prolongation costs, lost productivity, and loss of profit.

Mr. Blackburn has worked in senior positions with both contractor and consultant organisations and has a broad range of sector experience. He is an accredited expert with experience of litigation, arbitration, adjudication, and mediation, including concurrent expert evidence or 'hot tubbing' in arbitration hearings. He has acted as expert advisor and expert witness on behalf of contractors, subcontractors, and employers. He has provided expert opinion in respect of quantum, disruption, and delay in large, complex disputes involving multidisciplinary teams.

Mr. Blackburn’s recent experience includes waste-to-energy plants, marine salvage work, motorway infrastructure, professional negligence, gas refinery, and education facilities, both domestic and international.


University Salford
BSc, Quantity Surveying

Robert Gordon University
LLM, Construction Law and Arbitration

College of Estate Management
Post-graduate diploma in Arbitration

OND Building & Civil Engineering Studies

Employment History

Partner / director
2015 - 2018

Director expert services
2014 - 2015

Hill International
Vice president & executive director
2006 - 2014



Royal Institution of Chartered Surveyors
APAEWE Advanced Professional Award in Expert Witness Evidence

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Professional Affiliations

Royal Institution Chartered Surveyors (FRICS)

Chartered Institute of Arbitrators