"An excellent and tenacious advocate. Incredibly talented and bright. Meticulous in his preparation. He has a superb intellect."
James has a broad practice across criminal, extradition and public law, with his established expertise at the intersection of the criminal and civil forums. With a criminal trial background and with extensive experience of proceedings before the higher courts in extradition and public law, James acts in, and advises on, proceedings that engage these complex issues across jurisdictions.
He represents individuals in public law and civil proceedings, including challenging prosecution decisions and the exercise of police powers both by way of judicial review and civil proceedings. He frequently acts in some of the most high profile and complex extradition requests, and he advises on challenges to the use of sanctions, mutual legal assistance and Interpol Notices.
James is recognised as a leading junior in both extradition and public law and is noted for his formidable advocacy and his ability to quickly grasp and develop technical points of law.
James has extensive experience in the issues that arise in fraud and financial crime cases. His current and recent instructions involve advising individuals and corporations on responding to criminal investigations and the legality of production orders either obtained domestically, or pursuant to mutual legal assistance requests. His recent cases include:
James is one of the leading juniors in extradition and a former Chair of the Defence Extradition Lawyers Forum. He is frequently instructed in some of the most complex and high-profile cases. James has significant experience in Part 2 requests and has represented individuals sought by countries including the Russian Federation, Falkland Islands, India, United States, Moldova, Turkey and Ukraine. He is widely recognised for his in-depth knowledge of extradition and his ability to develop technical challenges to extradition requests, as well as securing notable successes in article 8 challenges and challenges based on delay. He has appeared before the Supreme Court and has often appeared alone against leading counsel in the Divisional Court and acts in proceedings before the European Court of Human Rights. His recent cases include:
James is recognised by Chambers and Partners as a leading junior in public and administrative law. He has a broad public law practice within the national security, criminal and immigration spheres. James acts for both claimants and the Government and is a member of the Attorney General’s A Panel of counsel. James acts in judicial review proceedings, TPIM proceedings and was instructed as junior in the first ever Temporary Exclusion Order. He has appeared in the Supreme Court and regularly appears in the Court of Appeal. With a criminal background and significant experience in human rights law, James is always available to advise on challenges to decisions by public bodies. His recent, current and notable cases include:
Claimant
Government
James has extensive experience in advising on, and acting in, matters concerning the proceeds of crime, asset forfeiture and seizure.
James is instructed for claimants in several challenges to the lawfulness of arrest and detention. James has also advised and acted in judicial review claims against the police and the retention of data on police records. With his criminal and public law experience James is well placed to advise and act for individuals in challenges to search warrants, charging and prosecution decisions. Ongoing and recent cases include:
James’ practice and experience in extradition and criminal law ensures he is well placed to advise and assist clients with cross-border criminal issues. He frequently advises and acts for individuals who are at risk of arrest in extradition proceedings, challenging sanctions, mutual legal assistance and Interpol notices and he has advised on and acted in proceedings before the European Court of Human Rights.
Attorney General’s Panel A – 2023
Attorney General’s Panel B – 2020
Attorney General’s Panel C – 2014-2019
Crown Prosecution Service Specialist Panel – Extradition Grade 4
James is a co-author of: Nicholls, Montgomery & Knowles on the Law of Extradition and Mutual Assistance, Fourth Edition.
James is a contributor to: Ward & Blundell: National Security, Law Procedure and Practice, Second Edition.
Defence Extradition Lawyers Forum (Former Chair)
Human Rights Lawyers Association
Criminal Bar Association
Fraud Lawyers Association
James is committed to protecting and respecting your privacy. In order to provide legal services to their clients, including advice and representation services, James needs to collect and hold personal data. This includes their client’s personal data and the personal data of others who feature in the matter upon which they are instructed. To read James’s privacy notice in full, please see here.
"James is super clever, pleasant to work with and great at drafting." "James is exceptional; really tenacious, all over the details and really impressive on the law. He is a stand-out."
"James's drafting is insanely strong." "James's submissions were polished and sophisticated. He was calm and persuasive under pressure." "James's submissions were polished and sophisticated. He was calm and persuasive under pressure."
"James is excellent advocate who consistently gets very good results. He is steadfast in his commitment to his clients and armed with encyclopaedic knowledge of the law. He is a first-rate barrister, a safe pair of hands, tactically astute, fearless in his approach and his written and oral advocacy is first class."
"A very powerful advocate who always retains the confidence of the court."
"James is technically brilliant on the law and a fearless advocate, ready to give his all on the behalf of his clients." "He is one of the best juniors in the extradition field and is an extraordinary advocate."
"He is empathetic with the client." "His work is turned around at speed but with great precision and accuracy." "James is very impressive in conferences and his written advice."
"James is able to digest high volumes of information quickly and communicate his advice clearly and concisely, with real insight."
"A brilliant junior who is a welcome addition to any team. He has an excellent command of the law."
"James Stansfeld has forensic knowledge of extradition law." "James Stansfeld is a very good strategic operator, who provides extremely good skeleton arguments, which are clear, concise and focused." "He is incredibly hard-working and always on top of everything. Stansfeld has an encyclopaedic knowledge of the law."
"A go-to extradition junior. Tactical and very easy going. His written work is exceptional and can change the course of a case."
"He is a very reliable lawyer with a fantastic manner. Completely unflappable. He handles cross-examinations masterfully." "James is an excellent junior, who is hard-working and incredibly bright, and has a really forceful intellect."
"James knows the law of extradition back to front. He is incredibly imaginative and skilled in his ability to argue complex cases." "A very smart and passionate advocate."
"A very responsive junior who thinks strategically and has great knowledge of case law."
"A brilliant extradition specialist. Really rolls up his sleeves and gets stuck into a case. Judges rightly trust his judgement. Wins cases through sheer hard work and acquired specialist knowledge."
"His technical astuteness and advocacy are amongst the best."
"An excellent and tenacious advocate. Incredibly talented and bright. Meticulous in his preparation. He has a superb intellect."
"Combines technical astuteness with strong advocacy, and is excellent at handling clients, proving very committed to them."
"A lawyer with a great understanding of the law, who is very strong on his feet."
"Incredibly talented and bright, he is meticulous in his preparation."
"A talented and tenacious advocate."
"Displays great technical ability when deciphering warrants and is good at analysing criminal judgments from other jurisdictions."
"He is always willing to look at his cases in an inventive way and he’s good at drilling through the technical detail."
"A real star of the extradition Bar – he is always on top of the paperwork."
"He has a real talent for identifying and developing groundbreaking legal points."
"Praised by sources for his advocacy skills."
"Very, very bright and academically very impressive."
"He has great drafting skills, is extremely good at the technical aspects of the law, and is good at communicating complex problems in a very clear way."

"An excellent and tenacious advocate. Incredibly talented and bright. Meticulous in his preparation. He has a superb intellect."
Legal 500 2021
Contact James: jamesstansfeld@matrixlaw.co.uk | +44 (0)20 7404 3447
Contact James's Practice Team (Team T): TeamT@matrixlaw.co.uk
James has a broad practice across criminal, extradition and public law, with his established expertise at the intersection of the criminal and civil forums. With a criminal trial background and with extensive experience of proceedings before the higher courts in extradition and public law, James acts in, and advises on, proceedings that engage these complex issues across jurisdictions.
He represents individuals in public law and civil proceedings, including challenging prosecution decisions and the exercise of police powers both by way of judicial review and civil proceedings. He frequently acts in some of the most high profile and complex extradition requests, and he advises on challenges to the use of sanctions, mutual legal assistance and Interpol Notices.
James is recognised as a leading junior in both extradition and public law and is noted for his formidable advocacy and his ability to quickly grasp and develop technical points of law.
James has extensive experience in the issues that arise in fraud and financial crime cases. His current and recent instructions involve advising individuals and corporations on responding to criminal investigations and the legality of production orders either obtained domestically, or pursuant to mutual legal assistance requests. His recent cases include:
James is one of the leading juniors in extradition and a former Chair of the Defence Extradition Lawyers Forum. He is frequently instructed in some of the most complex and high-profile cases. James has significant experience in Part 2 requests and has represented individuals sought by countries including the Russian Federation, Falkland Islands, India, United States, Moldova, Turkey and Ukraine. He is widely recognised for his in-depth knowledge of extradition and his ability to develop technical challenges to extradition requests, as well as securing notable successes in article 8 challenges and challenges based on delay. He has appeared before the Supreme Court and has often appeared alone against leading counsel in the Divisional Court and acts in proceedings before the European Court of Human Rights. His recent cases include:
James is recognised by Chambers and Partners as a leading junior in public and administrative law. He has a broad public law practice within the national security, criminal and immigration spheres. James acts for both claimants and the Government and is a member of the Attorney General’s A Panel of counsel. James acts in judicial review proceedings, TPIM proceedings and was instructed as junior in the first ever Temporary Exclusion Order. He has appeared in the Supreme Court and regularly appears in the Court of Appeal. With a criminal background and significant experience in human rights law, James is always available to advise on challenges to decisions by public bodies. His recent, current and notable cases include:
Claimant
Government
James has extensive experience in advising on, and acting in, matters concerning the proceeds of crime, asset forfeiture and seizure.
James is instructed for claimants in several challenges to the lawfulness of arrest and detention. James has also advised and acted in judicial review claims against the police and the retention of data on police records. With his criminal and public law experience James is well placed to advise and act for individuals in challenges to search warrants, charging and prosecution decisions. Ongoing and recent cases include:
James’ practice and experience in extradition and criminal law ensures he is well placed to advise and assist clients with cross-border criminal issues. He frequently advises and acts for individuals who are at risk of arrest in extradition proceedings, challenging sanctions, mutual legal assistance and Interpol notices and he has advised on and acted in proceedings before the European Court of Human Rights.
Attorney General’s Panel A – 2023
Attorney General’s Panel B – 2020
Attorney General’s Panel C – 2014-2019
Crown Prosecution Service Specialist Panel – Extradition Grade 4
James is a co-author of: Nicholls, Montgomery & Knowles on the Law of Extradition and Mutual Assistance, Fourth Edition.
James is a contributor to: Ward & Blundell: National Security, Law Procedure and Practice, Second Edition.
Defence Extradition Lawyers Forum (Former Chair)
Human Rights Lawyers Association
Criminal Bar Association
Fraud Lawyers Association
James is committed to protecting and respecting your privacy. In order to provide legal services to his clients, including advice and representation services, James needs to collect and hold personal data. This includes his client’s personal data and the personal data of others who feature in the matter upon which he is instructed. To read James’ privacy notice in full, please see here.
"James is super clever, pleasant to work with and great at drafting." "James is exceptional; really tenacious, all over the details and really impressive on the law. He is a stand-out."
"James's drafting is insanely strong." "James's submissions were polished and sophisticated. He was calm and persuasive under pressure." "James's submissions were polished and sophisticated. He was calm and persuasive under pressure."
"James is excellent advocate who consistently gets very good results. He is steadfast in his commitment to his clients and armed with encyclopaedic knowledge of the law. He is a first-rate barrister, a safe pair of hands, tactically astute, fearless in his approach and his written and oral advocacy is first class."
"A very powerful advocate who always retains the confidence of the court."
"James is technically brilliant on the law and a fearless advocate, ready to give his all on the behalf of his clients." "He is one of the best juniors in the extradition field and is an extraordinary advocate."
"He is empathetic with the client." "His work is turned around at speed but with great precision and accuracy." "James is very impressive in conferences and his written advice."
"James is able to digest high volumes of information quickly and communicate his advice clearly and concisely, with real insight."
"A brilliant junior who is a welcome addition to any team. He has an excellent command of the law."
"James Stansfeld has forensic knowledge of extradition law." "James Stansfeld is a very good strategic operator, who provides extremely good skeleton arguments, which are clear, concise and focused." "He is incredibly hard-working and always on top of everything. Stansfeld has an encyclopaedic knowledge of the law."
"A go-to extradition junior. Tactical and very easy going. His written work is exceptional and can change the course of a case."
"He is a very reliable lawyer with a fantastic manner. Completely unflappable. He handles cross-examinations masterfully." "James is an excellent junior, who is hard-working and incredibly bright, and has a really forceful intellect."
"James knows the law of extradition back to front. He is incredibly imaginative and skilled in his ability to argue complex cases." "A very smart and passionate advocate."
"A very responsive junior who thinks strategically and has great knowledge of case law."
"A brilliant extradition specialist. Really rolls up his sleeves and gets stuck into a case. Judges rightly trust his judgement. Wins cases through sheer hard work and acquired specialist knowledge."
"His technical astuteness and advocacy are amongst the best."
"An excellent and tenacious advocate. Incredibly talented and bright. Meticulous in his preparation. He has a superb intellect."
"Combines technical astuteness with strong advocacy, and is excellent at handling clients, proving very committed to them."
"A lawyer with a great understanding of the law, who is very strong on his feet."
"Incredibly talented and bright, he is meticulous in his preparation."
"A talented and tenacious advocate."
"Displays great technical ability when deciphering warrants and is good at analysing criminal judgments from other jurisdictions."
"He is always willing to look at his cases in an inventive way and he’s good at drilling through the technical detail."
"A real star of the extradition Bar – he is always on top of the paperwork."
"He has a real talent for identifying and developing groundbreaking legal points."
"Praised by sources for his advocacy skills."
"Very, very bright and academically very impressive."
"He has great drafting skills, is extremely good at the technical aspects of the law, and is good at communicating complex problems in a very clear way."