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Diales is the division of Driver Group, exclusively dedicated to the provision of Expert Witness services.

Our core team of experts now operate as Diales, distinct from Driver’s consultancy and project services divisions.

Diales’ expert team boasts an impressive profile, with instructions from leading law practices around the world representing major construction and engineering disputes. From actions in the London Technology and Construction Court (TCC), to Arbitrations in Paris, Dubai, and Singapore, our reputation and track record are world class.

Our experts can rely on receiving high quality support and assistance, alongside training and professional development, to ensure CPD is kept up to date. We maintain focussed expert profiles and visibility plans to ensure strong recognition and market presence for each member of the Diales expert team.

We are always keen to welcome new members to the Diales team, specifically those with a strong expert track record in Quantum, Delay Analysis or Technical disciplines.

Our standards are high, and entry is only open to those with an established profile as an expert witness.

Our policy is to not use agencies for recruitment at this level. We prefer to deal directly, discreetly, and with complete confidentiality with senior candidates. For more information, please directly contact our Managing Director, Mark Wheeler, at the following email address:  All expressions of interest will be dealt with in strictest confidence.

Driver Group delivers the full spectrum of commercial construction and engineering consultancy services.