Advice and expertise on major construction, engineering & infrastructure projects

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Cost-effective, high-quality service

We provide advice and expertise on major construction, engineering and infrastructure projects worldwide. Our focus is on key areas of Project Advisory, Commercial Management and Claims Management. Protecting your interests is what matters to us. We do this by delivering a cost-effective, high-quality service to our clients every time. Get in touch with us today – call the number below, email or follow us on LinkedIn


Claims Management

Striving to reach a cost-effective solution & settlement to meet your requirements.

Commercial Management

 Commercial management support ensuring project advisory best practice. 

Project Advisory

Quality advice: the difference between success or failure, profit or loss.

Our Approach

Our approach is to gain an understanding of the issues and challenges you face on your project and consider what expertise is required. We then ask the questions: What will bring the most value to the project? What are the key actions we need to prioritise that will provide a solution? 

Highly Qualified and Experienced Experts

We do not flood projects with resources or seek to re-invent the wheel. We work in small, dynamic teams, carrying out regular reviews to ensure your project is heading in the right direction. We aim to ensure it is exactly what you want. We constantly look for improvements to see if there are better and faster ways to achieve a solution, saving time and money for our clients.

With a network of qualified and experienced consultants, we’re proud of our close working relationship with leading international construction legal practices. Our low-overhead business model means your money is paying for solutions where it is most needed.

Director: John Henderson


John founded Derson Consulting in 2011. A Chartered Quantity Surveyor, expert QS, and claims consultant, he has approximately twenty-five years’ experience in building and infrastructure projects in the UK and overseas.

What Our Clients Say...

A few comments from some of our valued clients: 

“John Henderson is a first-rate Chartered Quantity Surveyor, with a quick mind and a great work ethic. Having worked with John on a complex international dispute, I can recommend him wholeheartedly.”

Partner, International Litigation & Arbitration, Top 20 City Law Firm

“I have had the pleasure of knowing John for over 5 years, and working with him on a number of prestigious projects in the Middle East and North Africa.

John is a highly qualified experienced Commercial / Claims Director who simply put- ”knows his stuff”… His transparent no nonsense approach always ensures the disputed matters are resolved quickly, fairly and efficiently. Not only would I recommend John… I will be using him again.”

Director, International Construction Consultants

The Right Choice

Ensure the success of your next project and secure a positive outcome should you find yourself involved in a dispute. Get in touch today and find out how Derson can assist you.