Expert Witness Services in Process and Industrial Engineering

80 years experience in over 90 countries delivering expert witness and litigation services to the High Court and International Court of Arbitration.

We are a “Boutique Expert Consultancy” with a top quality multidisciplinary engineering team that has been together for over 25 years – we are not an “expert supermarket”.
We are practising engineers with extensive technical expertise from over 40 years’ experience in the process and industrial engineering sectors. Manderstam is a private company that was formed in 1941 and is now 80 years old.
We have a top-quality reputation for producing incisive expert reports that has been gained in the last 25 years, with over 86 expert cases and giving oral evidence 36 times in Mediation, the UK High Court and International Arbitration.
We have been instructed by most of the international and domestic law firms with excellent references.
We have accreditation with the major expert witness registries such as the Expert Witness Institute (EWI), Expert Witness, JS Publications and the consultancy trade association, British Expertise.

Providing Scientific & Engineering Evidence Since 1941

Manderstam offer expert witness services, approved by the UK Law Society, with unparalleled oil, gas and petrochemicals expert witness expertise. All our experts are trained in giving legal evidence by Bond Solon. We also boast enormous engineering consultancy experience.

Instructed by leading international & domestic law firms

Provided oral evidence in 36 cases

Experience in over 86 cases

All experts highly trained in giving legal evidence

Expert Witness: Industry Specialisms

Unparalleled experience in the preparation and presentation of scientific and engineering evidence to the High Court and International Court of Arbitration.

Expert Witness Services Instructed By The World's Leading Law Firms

We have been instructed by most of the leading international and domestic law firms, with experience from well over 60 cases and the provision of oral evidence in over a third of these.

Click to view our Instructions by noted solicitors and insurers

Insurers

AIG
G A B Robins

Solicitors

Arnold, Davies, Cooper, London
Berrymans Lace Mawer, London
Bar & Karrer AG, Zurich
Berwin Leighton Paisner, London
Bird and Bird, London
Blatchfords, London
BP Collins, London
Clifford Chance, Paris
CMS Cameron McKenna, London
Cobbetts, Birmingham
DAC Beachcroft, London
David Phillips and Partners, Essex
Davies Arnold Cooper, London
Davies Lavery, London.
Deacons, Hong Kong
Dentons, London
Dickinson Dees, Newcastle
DLA, Birmingham
DWF, Manchester
Freeth Cartwright, Manchester
Fried, Frank, Harris, Shriver & Jacobson, Washington
Gide Loyrette Nouel, Paris
Greenwoods, London
Halliwells, London and Manchester
Holman Fenwick Willan, London and Qatar
Howard Kennedy, London
Kennedys, London, Bath and Birmingham
Lalive, Geneva
Mayer Brown International, London
McNulty & Co, Basingstoke
Mills & Reeve, Birmingham
Norton Rose Fulbright, London
Pinsent Masons, Glasgow and London
Rawlinson Butler, Crawley
Reid Minty, London
RPC, London
Sandersons, Hull
Shadbolt & Co, Reigate
Shoosmiths, Reading
Simmons & Simmons, London & Dubai, UAE
Smyth and Co, Hong Kong
Stewarts Law, London
Watson, Farley & Williams, Bangkok
Wilmer, Cutler, Pickering and Dorr, London
White and Case, London

Consultant Engineer Services

Manderstam International Group are fully-independent, and offer internationally-acclaimed engineering consultancy including project management and benchmarking. Extensive client background including BP, Shell, Chevron and British Gas.

Worldwide Expert Witness Clients

Arbitration & Engineering Expertise across 90 countries

Our work spans numerous countries and continents. We use our intimate knowledge of the oil and gas, petrochemical, pharmaceutical and manufacturing industries (among others) to provide specialist expert witness legal guidance and consultancy. To see the interactive map please click on the map or visit the Global Experience page

“Peter I just wanted to thank you for all of your hard work in preparing for the case against XXX and for giving evidence at the trial. I know it must have been a little stressful but thought you performed really well.”

“Dear Peter, 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.”

“Dear all, Congratulations on a successful week and many thanks to each and every one for the valuable contribution.”

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.

It has been great working with you and likewise hope we will have the chance to do so again in the future!

A belated thank you for all your work over the past 18 months or so. It has been a pleasure to work with you on what has been a demanding case from a technical and forensic perspective and the clients were helped tremendously by your ability to ferret out inconsistencies in the documentation / photos. I hope you enjoyed the experience of giving evidence notwithstanding the attempted attacks on your credibility and independence. We and counsel felt that you did a very good job in the witness box and managed to deal effectively with all the attacks.

The work done was to a high standard and the output met our requirements as well as the needs of our legal team.

Thanks so much to both of you for all your efforts and hard work for us.

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. The client was also very impressed – which, after all, is the main thing!

“Peter, good presentation, well done and thanks.”

A quick note of thanks for your guidance, expertise and patience with us throughout this process. You are a consummate professional and we sincerely appreciate all that you contributed to this effort.

“Dear Mr Lumley, Many thanks for your report, which I have read through. It is immensely helpful and clearly set out. I appreciate that you do not have some of the key documents that you would normally expect to see but have still produced a very cogent narrative that accommodates the gaps in information.”

“Dear Peter, We succeeded on the XX claim and partly on the delay claim. Please find attached the judgement. Thank you again for all of your help, which was much appreciated.”

“Dear Peter, Thank you for your assistance yesterday at the Hearing, it was very much appreciated……your evidence was invaluable and I thank you for your assistance in this matter”.

“Dear Peter, Please see attached [...] decision in the [...] adjudication. He has unequivocally decided in Bilfinger’s favour and this is in no small part to the clarity of your report.

"Thank you very much for your help with the wider case-it has been a pleasure working with you!”

Telephone call to thank Mr Lumley and the Manderstam team for the excellent and professional performance in the preparation of the expert reports and in particular our performance (Mr Lumley and Mr Sellers) at the hearing. He said they could not ask for more and it was a credit to ourselves and Galliford Try. He complimented us on our hard work, enthusiasm and grip of detail.

“Peter, Graham, Thank you very much for all your hard work on the case which is contributed in no small part to the result. Best wishes and I hope we can work together again in the future.”

“XX do not wish to contest your evidence and so you are not required to attend the arbitration. I cannot thank you both enough for everything you have done on this case”

Expert Witness Services in Process and Industrial Engineering

Providing Scientific & Engineering Evidence Since 1941

Instructed by leading international & domestic law firms

Provided oral evidence in 36 cases

Experience in over 86 cases

All experts highly trained in giving legal evidence

Expert Witness: Industry Specialisms

Oil, Gas & Petrochemicals

Chemicals & Fertilisers

Pharma & Bioengineering

Process Engineering

Industrial Engineering

Food, Fibres & Agriculture

Mineral & Metallurgy

Mechanical Design & Quality

Environment Health & Safety