“He has an impeccable attention to detail and a forensic approach to every case. Jason combines an empathetic approach with a robust handling of the issues.”

Chambers UK 2026

“He’s my go-to senior counsel. Jason is instructed on complex matters and where matters are particularly contentious.”

Chambers UK 2026

“Jason is extremely knowledgeable and very approachable. Clients appreciate his considerable abilities and commercial awareness.”

Chambers UK 2026

“Jason has been very helpful with the more complex cases, particularly in thinking outside the box in terms of tactics on tricky cases.”

Chambers UK 2026

“I give him all my tricky cases. Jason is really precise and he is so knowledgeable. He is such as good tactician and he is a real team player. He is excellent.”

Chambers UK 2026

“Jason makes clients feel heard from the very first meeting. He is a brilliant negotiator with superb attention to detail, but is also down to earth and realistic.”

Chambers UK 2026

“He has a brilliant ability to bring the expert evidence together. Jason cuts through that really well and this is a really good and positive skill as it gives the case direction.”

Chambers UK 2026

“Jason is very thorough in his preparation. His advice often has a practical slant which is very useful when looking to effectively move on a matter. He is approachable and works well as part of a team.”

The Legal 500 2026

“Jason always demonstrates exceptional legal knowledge, professionalism and dedication. His strategic thinking and attention to detail plays a crucial role in achieving the best possible outcomes for clients.”

The Legal 500 2026

“Jason is our go-to junior. He is strong in all areas and moves matters on without delay, often providing practical as well as legal solutions to cases.”

Chambers UK 2025

“Jason understands the clients and provides detailed written advice which is invaluable to them. He is also an excellent advocate and is our go-to counsel for any complex clinical negligence case.”

Chambers UK 2025

“Jason is a strong and impressive negotiator with excellent all-round knowledge.”

Chambers UK 2025

“Jason is sharp and personable.”

Chambers UK 2025

“Jason is a very effective trial advocate and excellent in overseeing complex JSMs. He is a particularly astute tactician on higher value cases and his attention to detail is exceptional. He is notably good when working under pressure. Clients value his incisiveness and technical knowledge.”

The Legal 500 2025

“‘Jason is absolutely excellent on paper, in conference and on his feet. It is rare to work with a barrister who has the complete skill set. He has an eye for the detail, is technically very capable, a good team player and puts clients at their ease.”

The Legal 500 2025

“Jason provides a sound legal opinion. He has a good ability to communicate with professional clients.”

Legal 500 2024

“Jason Cox is highly reputed for his tactical skills when tackling complex causation issues in cases of surgical negligence and misdiagnosis, among others.  He demonstrates skill in claims relating to sever injury and fatality as well as proficiency in mental health cases, with particular expertise in preventable suicide.”

Chambers and Partners 2023

“Jason Cox is an excellent junior with expertise in a wide variety of personal injury claims.  He is particularly well regarded for his handling of catastrophic injury and fatal accident claims, and splits his time between representing claimant and defendant clients.”

Chambers and Partners 2023

“Jason has a real eye for the detail of a case and his paperwork, whether that be pleadings, schedules or advice, is of a consistently high standard.  He’s always well prepared and a real master of his brief.”

Legal 500 – 2023

“Always very well prepared.  A very good advocate.”

Chambers and Partners UK Bar 2022

“A strong advocate both in court and at joint settlement meetings with extensive medical knowledge.”

Legal 500 2022

“He provides excellent and practical advice in difficult cases and he’s a real tactician, who always comes up with the best approach.  He is extremely capable both in court and in negotiations and leaves no stone unturned.  He’s always up to date with the latest legal changes and precedents, and he’s very approachable and always willing to pick up the phone to discuss a matter.”

Chambers and Partners 2021

“He has incredible attention to detail and turns instructions around quickly.”

Legal 500 2021

“He’s an excellent advocate, very persuasive on his feet, and he undertakes a huge amount of preparation for everything he does.  He’s very thorough, robust, and really understands the client’s concerns.  Very able and approachable; he puts clients at their ease.  He has a brilliant eye for detail and is very direct, with good judgement.  A careful barrister.”

Chambers and Partners 2020

“A strong advocate who provides practical advice.”

Legal 500 2020

“Jason is an extremely capable lawyer who is able to quickly grasp the relevant issues in a case.  His advice is always provided without delay and shows great attention to detail.  Frequently sought after for his experience in handling high-value catastrophic claims, he has a real eye for detail and is very good on his feet.  He delivers very high-quality work on time.”

Chambers and Partners 2019

“An excellent advocate, whose attention to detail is second to none.  His attention to detail is second to none and he never lets you down in negotiations or advocacy.”

Legal 500 2019

“Routinely instructed in high-value and complex clinical negligence cases.  His advocacy stands out because he’s able to see the key points of the case and deal with them in detail.  He consistently impresses in terms of attention to detail and his diligent approach to every case.”

Chambers and Partners 2018