'A measured but forceful advocate, and a man with a very sharp mind. He is intellectually engaged at all times and particularly hot on cases with medical issues.'
'A totally approachable barrister, who goes the extra mile.'
Chambers UK Bar 2025
'Jonathan is an exceptional advocate. He is sharp-minded with an encyclopaedic knowledge of the law and procedure. He has the ability to grasp the facts quickly and process them, enabling him to command respect from both judges and clients alike.'
The Legal 500 UK Bar 2025
‘Jonathan is a fantastic advocate who provides great support to solicitors when dealing with difficult or unusual issues.’
The Legal 500 UK Bar 2025
"Excellent with evidence and in cross-examination, he has great presence in court."
Chambers UK Bar 2024
"His mind is like a top-grade, super computer and his knowledge is encyclopaedic; you can't help but be amazed at his ability to pull arcane but helpful points from the labyrinthine annals of the law."
"Jonathan Sampson is brilliant with difficult clients and has exceptional knowledge and skill."
"A very good advocate, he's someone who asks the right questions in court and works out how to put his client's case in the best possible way."
"Excellent with evidence and in cross-examination, he has great presence in court."
"Clever, strategic and someone with strong cross-examination skills."
Chambers UK Bar 2024
'Jonathan is one of the most intelligent advocates. His grasp of expert evidence, in particular, is extremely impressive.'
The Legal 500 UK Bar 2024
'Jonathan is assiduous in his preparation and has a great eye for detail.'
The Legal 500 UK Bar 2024
“He's clever, he knows his papers and he has an eye for the technical detail in a case.”
Chambers UK Bar 2023
“Jonathan Sampson is a strong KC who is excellent at digesting information swiftly.”
Chambers UK Bar 2023
'Jonathan is brilliant in cross-examination of the witnesses, be it the lay parties or experts. His unruffled ability to forensically challenge and undermine a witness is peerless. He has a great command of the complexities of medical evidence.’
The Legal 500 UK Bar 2023
"Jonathan has an encyclopedic memory of regulations and the law. He is favoured for complex cases and consistently delivers results." "Once you put him on a case the client only wants him. He is a polished performer in court and an excellent strategist." "He is brilliant at strategy." "Very detailed, thorough and good on his feet."
Chambers UK Bar 2021
"Is a masterful advocate. His calm and confident manner wins over clients and judges. He takes difficult points and runs them successfully." "Always an impressive advocate with excellent client care."
The Legal 500 UK Bar 2021
"An incredibly experienced barrister, who always commands the attention of those around him."
Chambers UK Bar
"He is resourceful and utterly determined."
Chambers UK Bar 2020
"His brain has the great ability to turn over and digest information, and he's got a really good understanding of public law and related areas."
Chambers UK Bar 2020
"He's a superb advocate - his cross-examination skills are second to none."
Chambers UK Bar 2020
"He's excellent, and his advocacy is very intelligent, perceptive and subtle."
Chambers UK Bar 2019
"A superb advocate who operates like a Rolls - Royce. He has an encyclopaedic knowledge of law and procedure."
Chambers UK Bar 2019
"A good strategist who is always a couple of stances ahead."
Chambers UK Bar 2019
"Has an admirable intellectual grasp of complex issues."
The Legal 500 UK Bar 2018
"A barrister with an impressive intellect and elegant style."
The Legal 500 UK Bar 2018