What Clients and directories say
“Jonathan Grimes is a brilliant strategist and advocate. Also, a great team player who complements any defence team.”
– The Legal 500 UK, 2026
“He has a sound understanding of health and safety law.”
– Chambers & Partners, 2025
“I’ve been really impressed with how commercial his approach is.”
– Chambers & Partners, 2025
“Jonathan does a lot of international work.”
– Chambers and Partners UK, 2025
“He is on top of all the details.”
– Chambers and Partners UK, 2025
“He is a very seasoned and astute practitioner.”
– Chambers and Partners UK, 2025
“He’s well regarded.”
– Chambers and Partners UK, 2025
“I think he’s very cerebral.”
– Chambers and Partners UK, 2025
“Jonathan Grimes and his team are very proactive. It is a pleasure to work with them.”
– The Legal 500 UK, 2025
“Jonathan Grimes is a very skillful solicitor who can navigate clients through particularly difficult waters.”
– The Legal 500 UK, 2025
“He is a deep thinker, an analyst.”
– Chambers & Partners, 2025
“Jonathan Grimes brought a good understanding of contractors and the specific issues that affect them and the way they operate. He combined this with a sound understanding of the relevant health and safety law.”
– Legal 500 UK, 2025
“He takes his clients’ worries off of them and onto himself.”
– Chambers & Partners, 2025
“He is an impressive lawyer.”
– Chambers and Partners, 2025
“Jonathan Grimes brought a good understanding of contractors and the specific issues that affect them and the way they operate. He combined this with a sound understanding of the relevant health and safety law.”
– Legal 500 UK, 2025
“His case strategy is always spot on.”
– Chambers & Partners, 2025
“The work I have seen Jonathan Grimes on has been very thorough, and I was very impressed with him.”
– Chambers and Partners, High Net Worth 2024
“Jonathan is a very good global, strategical thinker who can see the whole field at once. He can make a case make sense, and he’s very good at balancing strategic and competing considerations.”
– Chambers and Partners High Net Worth, 2024
“Jonathan is a very good lawyer, and highly imaginative at finding unique solutions. He is highly professional in all his dealings and an outstanding practitioner.”
– Chambers and Partners High Net Worth, 2024
“Jonathan is an absolutely excellent lawyer.”
– Chambers and Partners 2024
“Jonathan is always quick to respond to requests and he provides sound and commercial advice.”
– Chambers and Partners 2024
“He was very agile in his thinking and imaginative in responding to the authorities. He was highly practical in finding commercial solutions and came up with a brilliant way of working through the case.”
– Chambers and Partners 2024
“He is an amazing lawyer with a great, varied practice.”
– Chambers and Partners 2024
“Jonathan is always quick to respond to requests and he provides sound and commercial advice.”
– Chambers and Partners 2024
“He demonstrates a strong level of sophistication.”
– Chambers and Partners 2024
“a brilliant strategist and advocate”
Legal 500 UK, 2026
“Jonathan is understated in his manner but has a razor-sharp mind and a genuine passion for getting his clients the outcome they want from a case.”
Chambers High Net Worth 2025 – Financial Crime: High Net Worth Individuals
“Jonathan Grimes is extremely bright and cuts straight to the issues.”
Chambers High Net Worth 2025 – Financial Crime: High Net Worth Individuals
“Jonathan is a brilliant tactician and lawyer. He is also easy to get along with, which is an enormous advantage when it is necessary to speak to the other side. His charm is his secret weapon.”
Chambers High Net Worth 2025 – Financial Crime: High Net Worth Individuals
“Jonathan is a well-rounded litigator who is very calm under pressure.”
Chambers & Partners, 2025
“He has a sound understanding of health and safety law.”
Chambers & Partners, 2025
“I’ve been really impressed with how commercial his approach is.”
Chambers & Partners, 2025
“His case strategy is always spot on.”
Chambers & Partners, 2025
“He takes his clients’ worries off of them and onto himself.”
Chambers & Partners, 2025
“He is a deep thinker, an analyst.”
Chambers & Partners, 2025
“Jonathan Grimes combines experience, intelligence, pragmatism, sound judgment and the ability to think outside the box to get the best for his clients.”
The Legal 500, 2025
“Jonathan Grimes brought a good understanding of contractors and the specific issues that affect them and the way they operate. He combined this with a sound understanding of the relevant health and safety law.”
Legal 500 UK, 2025
“The work I have seen Jonathan Grimes on has been very thorough, and I was very impressed with him.”
Chambers and Partners, High Net Worth 2024
“Jonathan is a very good global, strategical thinker who can see the whole field at once. He can make a case make sense, and he’s very good at balancing strategic and competing considerations.”
Chambers and Partners High Net Worth, 2024
“Jonathan is a very good lawyer, and highly imaginative at finding unique solutions. He is highly professional in all his dealings and an outstanding practitioner.”
Chambers and Partners High Net Worth, 2024
“Jonathan is an absolutely excellent lawyer.”
Chambers and Partners 2024
“Jonathan is always quick to respond to requests and he provides sound and commercial advice.”
Chambers and Partners 2024
“He was very agile in his thinking and imaginative in responding to the authorities. He was highly practical in finding commercial solutions and came up with a brilliant way of working through the case.”
Chambers and Partners 2024
“He is an amazing lawyer with a great, varied practice.”
Chambers and Partners 2024
“Jonathan is always quick to respond to requests and he provides sound and commercial advice.”
Chambers and Partners 2024
“He demonstrates a strong level of sophistication.”
Chambers and Partners 2024
“Jonathan Grimes is a superb lawyer with an uncanny ability to predict how a case is likely to fare as it progresses from investigation to trial. He has wonderful judgement and inspires confidence.”
– The Legal 500, 2024
“Jonathan Grimes thinks outside of the box and is an excellent strategist.”
– The Legal 500, 2024
“Jonathan Grimes has excellent judgement on sensitive health and safety cases with a criminal angle.”
– The Legal 500, 2024
“Jonathan Grimes is an excellent tactician.”
– The Legal 500, 2024
“Jonathan Grimes has “a great variety of high-quality work” as well as “great authority and judgement” in the space.”
– Who’s Who Legal 2023
“Jonathan Grimes stands out for his exceptional legal ability and thoughtful approach. Brings his immense experience to bear from the earliest stages of a case. Authoritative, measured, and effective.”
Legal 500 UK, 2023
“Jonathan Grimes is very personable and excellent with clients. He is also razor-sharp and gets to the point.”
Chambers UK, 2023
“He is incredibly smart, vastly experienced and very creative in spotting solutions – an extremely thoughtful and steady adviser.”
Chambers & Partners, 2022
“Jonathan is hugely well respected and a great negotiator who is always able to get the best deal for clients.”
Chambers & Partners, 2022
“Jonathan is a legend who doesn’t really need an introduction. He is extremely confident in this field of work and knows exactly what he is doing.”
– Chambers & Partners, 2022
“Jonathan is a legend who doesn’t really need an introduction. He is extremely confident in this field of work and knows exactly what he is doing.”
– Chambers & Partners, 2022
“Jonathan Grimes is very personable and excellent with clients. He is also razor-sharp and gets to the point.”
– Chambers UK, 2023
“I recommend Jonathan Grimes – a shining example of a master of their profession, and totally client-focused.”
– Chambers High Net Worth Guide 2022
“Jonathan Grimes continues to impress market commentators thanks to his mental stamina and enthusiasm to do a first class job.”
– Who’s Who Legal, Business Crime Defence – Individuals and Corporates 2022
“Jonathan Grimes is a first choice for financial crime matters, noted for his deep understanding of all stages of criminal and quasi-criminal proceedings.”
– Who’s Who Legal, Investigations 2022
“He’s thoughtful, very versatile and a pleasure to work with.”
– Chambers and Partners UK, 2022
“Jonathan is hugely well respected and a great negotiator who is always able to get the best deal for clients.”
– Chambers & Partners, 2022
“He is incredibly smart, vastly experienced and very creative in spotting solutions – an extremely thoughtful and steady adviser.”
– Chambers & Partners, 2022
“Jonathan demonstrates a broad depth of knowledge and also has a wide and varied network which has helped support me on both a personal and corporate basis. I would highly recommend Jonathan.”
– Legal 500 UK, 2022
“I know Jonathan’s work mainly in the field of international criminal law, where he is also a leading figure – hugely committed to his clients, and with a deeper interest in the development of this area of law generally.”
– Legal 500 UK, 2022
“Jonathan Grimes is cerebral and hardworking.”
– Legal 500 UK, 2022
“Grimes is a brilliant lawyer – he has very good international expertise.”
– Chambers High Net Worth Guide 2021
“I think his client manner is excellent, and he is extremely bright and able. He is completely dedicated to his clients. He provides the full package in terms of service.”
– Chambers High Net Worth Guide 2021
“He looks at the bigger picture and is very analytical – He’s really sharp and thoughtful.”
– Chambers UK, 2021
“Jonathan Grimes gives very thoughtful, clear advice and is equally at ease dealing with the directors of an international business as with individual employees. I was especially impressed by his ability to cut through complicated expert evidence to identify the key strengths and weaknesses. He is excellent with clients and has a touch of steel.”
– Legal 500 UK, 2021
Jonathan Grimes is meticulous, emotionally intelligent, with exceptional client skills, and is a first-rate academic lawyer.”
– Legal 500 UK, 2021
“He’s got a lot of knowledge in the POCA area. He’s analytical and is a skilful, talented lawyer.”
– Chambers UK, 2021
“He’s one of the leading luminaries in fraud and POCA; he is able to get results without the pain of litigation.”
– Chambers UK, 2021
“He’s very experienced. He’s also a very confident and inspiring person – when things are difficult, he’s calm and reassuring. I was especially impressed by his ability to cut through complicated evidence to identify the key strengths and weaknesses of our position.”
– Chambers UK, 2021
“He has a good ability to think through legal issues in a broad and international way. He doesn’t go for the most obvious and domestic point, he looks at the bigger picture and he is very analytical.”
– Chambers High Net Worth Guide 2020
“He has knowledge not just of UK domestic law but also treaties and conventions abroad which makes him unique in his solutions.”
– Chambers High Net Worth Guide 2020
“He is an all round adviser with second to none technical knowledge, but also a very gracious and caring human being who provides practical advice to his clients.”
– Chambers UK, 2020 – A Client’s Guide to the UK Legal Profession
“Jonathan Grimes careful and passionate attention to his clients has made him, slowly but surely, one of the most admired operators in the field. His particular interest in international crime has inspired a huge growth in this area of work within the firm. This requires an usually keen legal mind and a great deal of patience: he has both, and in large measure.”
– Legal 500 UK, 2020
“Jonathan Grimes is utterly exceptional.”
– Legal 500 UK, 2020
“He’s very pragmatic and down to earth, but he also has a good grasp of the technical issues that you need to have when dealing with the criminal side of health and safety.”
– Chambers UK, 2020 – A Client’s Guide to the UK Legal Profession
“Is tenacious while at the same time being pragmatic and highly knowledgeable.”
– Legal 500 UK, 2020
“A very cerebral mind, he continues to impress market sources with his exceptional work on high-profile white-collar investigations.”
– Who’s Who Legal: Investigations, 2020
