A league of their own
The only #1 ranked witness preparation company by Chambers & Partners for the past 5 years (2025).
What People Say
"Assurety's service is very practical and it's the closest thing to creating a live trial scenario to prepare witnesses to perform on the stand. It's the best offering in market." Chambers Litigation Support (2024)
Donny Surtani
Herbert Smith Freehills
Magic Circle Litigator
Stefan Martin
Partner, Hogan Lovells












Who We Are
Assurety only use top Barristers, performance psychologists and expert communication trainers.
Founded by three KCs - Paul Epstein KC, Jason Galbraith-Marten KC and Ed Williams KC - we have a team of 64 barrister trainers, including 39 KCs and several retired High Court and Court of Appeal Judges, as well as 17 communications experts and 10 performance psychologists.

Paul Epstein KC

Jason Galbraith-Marten KC

Ed Williams KC