What Our Clients Think

A selection of testimonials from satisfied clients



Ferrovial Agroman Ireland

As a global company, we employ only the services of external consultants who fully understand our core business and in particular how our company operates.

We choose John as we found him to be very down-to-earth and capable of navigating us through some very complicated challenges facing our business over the many years we have been working together. He has worked with us now for almost a decade on various matters and has always been able to  provided a tailor-made, customised service. 

Because of his experience and incredible in-depth knowledge of our industry, we have found that you can trust him to provide the best possible advice. We have built up a very good working relationship with his company allowing him to liaise with our in-house and external consultants and legal teams to provide a seamless solution to any matter.

Whether you’re a start-up or an established global organisation we feel that John will give you equal attention. If you are looking for someone to go the extra mile then contact John Farage O’Brien.

Kieran O’Brien | Commercial Manager



Maples & Calder

John's range of technical expertise and skill is very impressive particularly as it is allied to a very deep knowledge and understanding of the various relevant forms of dispute resolution. These are major assets, and make John an extremely valuable commodity in the context of any construction dispute.   

However, what really sets John apart, and makes him someone with whom we are always delighted to work, is his relentless commitment to achieving the best possible result for his client and, of course, his track record of doing just that.

Dudley Solan Partner | Head of Litigation





Eversheds engaged the services of John O’Brien and Roy Sherlock as consultants for our client, to advise on a loss and expense claim on a road project. Our client was a subcontractor in a contractual final account dispute with its contractor, with delay claims and issues to defend on contractor LADs.

Our experience and that of our client was very positive as both John and Roy were very flexible and open minded in their engagement with us and our client. We also found them to be most responsive and always hit agreed deadlines. The output was thoughtful and they looked around corners — all in all, we would definitely recommend them again.

Dermot McEvoy | Partner, Head of ADR



Linacre Associates

I have worked on the other side from John in a number of conciliations and arbitrations — he proved a formidable opponent with a complete mastery of the facts and had compelling arguments to support his case.

More recently we have undertaken a number of arbitrations where — thankfully — he has been on the same side. John provided major contributions to the case to distill the issues and successfully made the arguments for delay and disruptions claims. I have no hesitation in recommending him to others.

Peter A Johnson | Planning Director




EDCM Consulting Engineers

As an expert technical witness, I have worked with John O’Brien on a number of conciliations and arbitrations and have always been impressed with John’s immediate grasp of detailed technical matters and how he creates an effective link between these and the fundamental core issues.

John is an extremely effective team leader and driver and his in-depth knowledge and ability to coordinate and engender ‘joined-up thinking’ stands head and shoulders above my experience of other cases where John has not been involved.

Stephen Beverley
 | Managing Director