Expert Witness

Experience providing court testimony in over 85 countries, delivering expert witness and litigation services to the High Court and International Court of Arbitration.

View our expert witness and arbitration specialisms.

What Is An Expert Witness?

An Expert Witness at Manderstam is an individual with expert knowledge within a certain field or discipline. We handpick the most suitable representative for your case to ensure that we are able to provide independent expert reports for your case.  Our Expert Witnesses will provide impartial, truthful and independent opinions, even if they do not help your case. They are there to provide an expert opinion to the court.


What Is An Expert Witness Report?

The purpose of an expert witness report is to provide an expert opinion on the case.  This is mainly to provide the court with an experts opinion in order to allow a decision to be made on the dispute.  Within the report, the facts and the expert opinion will be clearly separated.

Expert Witness: Industry Specialisms

We have particular specialism as an oil and gas expert witness, and have unparalleled experience in the preparation and presentation of scientific and engineering evidence to the High Court and International Court of Arbitration.


Thanks for all your hard work on the case over the last year.

I was very impressed by your performance under cross examination and in the hot tubbing session. You got the tone absolutely spot-on in terms of explaining your position with authority whilst recognising your obligations to be a neutral expert.

Partner at Holman Fenwick Willan LLP,
London-December 2017


I wanted to thank you again for all your help and all the time you put in preparing for the hearing. I know cross-examination isn’t fun, but on the whole I thought you went well and you stood your ground.– I have enjoyed working with you and learning just enough about LPG plants to be dangerous

Partner at Bird & Bird,
London-April 2017


Thank you so much to you and all your team for all your hard work on your report. We think it is a very good piece of work.

Management at Saipem Contractors
France & Italy- October 2016


Thanks to everybody for the excellent work done before and during the last intense week.

Counsel at Pickering Hale & Dorr LLP

Washington DC - April 2015

Worldwide Expert Witness Expertise

Specialist experience in almost 90 countries

Manderstam offer expert witness services, approved by the UK Law Society, with unparalleled oil, gas and petroleum expert witness expertise. We also boast enormous engineering consultancy experience.