Who we are

The number one provider - Chambers and Partners 2020 and 2021

Assurety is owned and run by three QCs  -  Paul Epstein QC, Jason Galbraith-Marten QC and Ed Williams QC. Between them they have over 75 years' experience of cross-examining witnesses and arguing cases in the highest courts.

They could see from their time spent in court that not enough was being done to prepare witnesses effectively for the real experience of being cross-examined.

“Assurety are absolutely excellent. We have used them for a number of cases with great success. They have a strong team who quickly build a rapport with the witnesses and help build confidence in a sensitive way.” Chambers and Partners 2020

Together they developed a range of witness familiarisation courses that combine the skills and experience of leading barristers with expert communications trainers and performance psychologists, to deliver the most effective preparation for cross-examination and to help participants to give their evidence to the best of their ability.

They quickly established Assurety as the acknowledged leader in premium witness training, and are the only band 1 ranked firm in Chambers and Partners, helping numerous clients in weighty and high-profile matters, as well as offering clients premium communications training.


All of our barrister trainers are highly regarded in their field of expertise, from chambers such as Essex Court, Serle Court, Blackstone, Matrix, 11 KBW, Littleton and Cloisters. We only use senior juniors (10 years’+ call) and QCs with extensive cross-examination experience.

Communications Trainers

Our communications trainers are experienced in coaching and training and all come from a background of acting, TV or performance. They are experts in analysing performance. They notice what people are doing and how they are doing it, and they help witnesses understand the impact they might be having on someone else and what they might be able to do to change that.

Performance Psychologists

All our psychologists combine an academic background in behavioural psychology with a proven track record in transforming the performance of business leaders and sportsmen. This gives them a unique perspective in both the theory and practice as to why individuals behave as they do under pressure.

Meet our board

Paul Epstein
Paul EpsteinQC
Jason Galbraith-Marten
Jason Galbraith-MartenQC
Ed Williams
Ed WilliamsQC

Download our brochure

For more information about Assurety Training please read our brochure.