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John Mullen

John Mullen is a chartered quantity surveyor and civil engineering surveyor with over 40 years' experience across buildings, infrastructure, civil engineering, energy, oil and gas and process projects.

He was one of the founders of Driver Group and is now a main board member.

As one of the world’s leading quantum experts, he has had over 75 expert witness appointments in many different jurisdictions across the world, including, Africa, the Americas, Europe, the Middle East and the United Kingdom. Matters appointed on have ranged in value up to US$2.75 billion in dispute.

John has been cross-examined on many occasions, several times in the hot tub. He has been cross-examined by specialist…

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“John is simply the best quantum expert I have worked with"
"He is efficient and clear"


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