John is the Managing Director of Boultwood + Associates, formerly a senior Partner and the Global Head of Contract Services at Turner & Townsend. John has true global experience having worked in over 35 countries, providing commercial advice into Major Projects and Programmes at all stages of the project cycle.

John has wide experience in dispute avoidance and commercial management of disputes. He authored 130+ independent Expert reports and has testified as a Quantum Expert on 26+ occasions in major international arbitrations. John has provided opinion at trial on a range of subjects which include estimation, suspension, termination valuation, cost and financial audit, preparation of final accounts, valuation of variations, re-measurement, inflation, and assessment of disruption/prolongation cost claims and counterclaims/back charges.

Who’s Who Legal rank John as a Thought Leader and Clients and Peers says:

John is "a very polished, unflappable and knowledgeable quantum expert who is a natural choice for high-stakes cases".

John is an "excellent quantum expert producing good-quality independent work".

John is a “highly experienced” and “very well known” construction expert who is recognized as a leading name in the Middle East.

John provides “clear” and “sound” advice to clients and is praised for the quality of his testimony.

John “is a very strong and very reliable quantum expert.”

“John is excellent and has a fantastic reputation.”