
Gideon Cammerman KC
Head of Chambers
Gideon Cammerman KC, Head of Chambers, is a top ranked silk in fraud and regulatory cases. Gideon is currently instructed in many of the highest profile SFO and CPS investigations including Entain (former CEO), ENRC (primary individual), Balli Steel (first defendant), Unaoil, Petrofac and Petrobras. Gideon is a trial advocate. He has also appeared in many of the highest profile trials in recent years including the Carillion Audit trial before the Financial Reporting Council, Balli Steel trial, the Alstom corruption case, LIBOR rate–fixing, Weavering Capital Fund fraud, the “Gypsy Slavery” cases and the “Anonymous” computer hacking case. Gideon has prosecuted many multi-million pound private prosecutions, all successfully.
Gideon is also instructed by individuals, company directors and government departments to advise and act in cases outside the sphere of public litigation. These clients have included offshore jurisdictions, companies conducting internal investigations, online gambling companies and sportspeople (gambling and doping related). In recent years, Gideon has also had a particular focus on sanctions and the consequences to non-sanctioned individuals of sanctions regimes.
Testimonials
"Gideon Cammerman KC of 187 Chambers is an experienced criminal silk with noted expertise in defending and prosecuting financial crime cases. He is highly proficient in fraud and corruption cases and is highlighted for his particular skill in leading private prosecutions. Cammerman has significant experience representing clients in Serious Fraud Office investigations."
"Gideon is very hard-working, responsive and client-oriented."
Chambers and Partners 2025
"Gideon quickly gets to the essence of the case and presents complex financial information to a jury in an easily understandable manner, so as to give life to the case. He is a skilled and persuasive advocate who quickly gains the trust and confidence of the court."
"Gideon is unbelievably committed. Clients love him for his practical advice. He is hugely respected and understands exactly how to present fraud cases to a jury"
Legal 500 2025
"He is an impressive and persuasive advocate who can pick up hugely complex fraud cases in no time and is incredibly client-friendly."
Chambers and Partners 2024
"Gideon is hard working, client-focused and very user friendly. He is also very commercial in his approach to cases."
Legal 500, 2024
"Gideon is an extremely able advocate. He is always in demand to take on the more difficult and challenging cases."
Chambers and Partners 2023
"Gideon is a formidable silk."
Chambers and Partners 2023
"He is extremely thoughtful, academically very smart and fearless about putting forward arguments. Gideon is clear and focused in the advice he gives and is strong on the detail."
"He will really fight in the trenches for you." "He is really intelligent and extremely persuasive." "A fearless advocate."
Chambers & Partners, 2022
"A ferocious advocate with an eye on the end game."
Legal 500, 2020
Ranked In
Cases
Asset Forfeiture & Confiscation
Gideon acts in all aspects of asset restraint and recovery under the Proceeds of Crime Act. These include restraint, moratorium, civil forfeiture and confiscation. Gideon has a particular expertise in the novel applications of bank moratoria more frequently being used by law enforcement agencies. These, in Gideon’s view, are not being challenged robustly enough.
AG v Bank (2022) – Challenging, successfully, high street Bank’s restraint and moratorium of HNW client’s balances.
NCA v C (2022) – Resisting applications for moratorium and subsequent restraint for Chinese client at the request of Taiwanese authorities.
AK v Bank (2021) – Negotiating release of balances with high street bank of individual closely related to sanctioned individual.
SFO v A (2019 – present) – protection of assets held by family trust from confiscation order.
Bribery & Corruption
Gideon is instructed in many of the largest bribery and corruption cases currently under investigation by the SFO and abroad. These include ENRC, Petrobras, Petrofac, Balli and others. He has appeared in the Court of Appeal and on application to the Supreme Court AIL v SFO [2016] 1 Cr App R 21 on bribery and corruption issues.
SFO investigation into B (2019 – present) – Instructed for main subject of ongoing investigation into multi-national trade finance company
SFO investigation into P (2019 – present) – Instructed for director of agent in ongoing investigation into petrochemicals company
SFO investigation into G (2019 – present) – Instructed for primary subject of corruption of investigation into mining interests in Africa
Re A (Unaoil) (2018 – present) – Instructed to represent potential defendant in Unaoil investigation by DoJ and SFO.
R v Graham Hill, Alstom Corruption case [2016] 1 Cr App R 21 (2015 – 2018) – Successfully defended this international corruption case involving infrastructure projects from Delhi to Tunis.
Criminal Defence
Gideon defends in criminal case of all types. Although his focus is on financial crime, Gideon has acted in many of the Modern Slavery cases, when the Act first came into force (R v Connors and others [2013] EWCA Crim 324). Consistent with his pedigree, Gideon has acted in many murders and other offences of serious and organised crime.
R v Jabari Shelton (2019) – Defending internationally known individual (A$AP Bari) charged with sexual assault
R v Rooney and 16 others (2016 – 2020)– Defending main defendant in the largest slavery prosecution in England and Wales
AG of Jersey v Norris (2015 – 2017) – Defending in importation of a tonne of cannabis to Jersey
R v Connors and others (2013 – 2014) [2013] EWCA Crim 324, Southampton and Bristol trials, – Defending members of the Travelling Community charged with Slavery. Secured the first acquittal under section 71 Coroners and Justice Act in England and Wales. Responded to appeal against the Attorney General on a reference
R v Jake Davis and others (2012 – 2013)– Defending an alleged ‘hacktivist’ and spokesperson for the ‘Anonymous’ collective, an organization committed to freedom of access to the internet that had attacked the websites of the FBI, CIA, Senate and the NCA. Mr Davis avoided extradition to the US and served only 1 month in custody despite the gravity of the charges he faced
R v Jogmahon (Trinidad – 2012) – Advising on all aspects of bringing a private prosecution for murder in Trinidad
Criminal Prosecution
Before taking silk, Gideon was a prosecutor for HMRC (Customs Panel), the specialist casework division of the CPS and other government departments (AG’s Panel). Gideon no longer accepts instructions of government prosecutors and focuses instead on private prosecution. Gideon has successfully prosecuted a number of multi-million pound and high profile private prosecutions. He has also been regularly instructed to deploy his unique depth of knowledge of private prosecutions in defending.
R (Hunter Ltd) v Lawless (2018 – 2020) – Successful private prosecution for £2m fraud
R (Khassenov) v Kulich (2016 -2018)– Successful private prosecution in a multimillion dollar international fraud
Orenstien v Pradhan (2015)– Successful private prosecution for fraud and perverting the course of justice
Fraud & Financial Crime
Fraud and financial crime is at the heart of Gideon’s practice. He has acted and remains instructed in many of the highest value, and most technically challenging, fraud cases. These have included the Weavering Capital Fraud ($632m) and the LIBOR rate fixing.
SFO v A (2019 – present) – £300m trade finance fraud.
Royal Mail v NS (2019 – present) – £80m declaration fraud.
R (Hunter Ltd) v Lawless (2018 – 2019) – Successful private prosecution for £2m fraud
R (Khassenov) v Kulich (2016 -2018)– Successful private prosecution in a multimillion dollar international fraud
R v Peterson, Weavering Capital Fund Fraud (2013 – 2015)– Representing hedge- fund manager charged with fraudulent trading in financial instruments with an alleged loss of $626m
AG of Jersey v Michel (2006 – 2011) [2009] UKPC 41; [2009] WLR (D) 312 –Defending. Gideon was engaged in this case full time from March 2006 to late 2007 and with regularity since. It was the largest money laundering case in the history of the Channel Islands. Gideon acted in the team for the first defendant. The Privy Council (Supreme Court) quashed the conviction
Professional Discipline
Gideon was the senior external case presenter for the Association of Chartered Certified Accountants for a number of years and developed a deep understanding of PD. He acts in the SDT, ACCA, medical practitioners’ disciplinary bodies of various types and sports disciplinary tribunals, including the BHA, National Anti Doping Panel and others.
FRC v AB (KPMG) (2021 – 2022) – Gideon acted for an individual KPMG employee alleged to have failed properly to audit the accounts of Carillion shortly before it went into a £Multi Bn administration.
Regulatory Law
Gideon is regularly instructed to appear before the tribunals including the Financial Conduct Authority, the Financial Reporting Council, the Gambling Commission, National Anti-Doping Panel, British Horseracing Authority, he was for a number of years the senior external Case Presenter for the Association of Chartered Certified Accountants. Gideon has acted in a number of Health and Safety Act cases, in particular those relating to construction and groundworks. Gideon has a particular expertise in dealing with the temporary freezing powers arising from Part VII of POCA. Gideon has acted for online gambling companies, solicitors firms, accountancy firms, banking services complainants, boxers, rugby players, jockeys.
National Anti-Doping Panel v T (2018) – Successfully acting for boxer charged with doping offence
Gambling Commission v X Ltd (2016) – Director of online gambling company cleared of wrongdoing
British Horseracing Authority v X (2015) – Acted for jockey charged with illegal betting
Sports Law
Gideon is regularly instructed to appear before the tribunals including the Financial Conduct Authority, the Financial Reporting Council, the Gambling Commission, National Anti-Doping Panel (boxer and rugby player) and British Horseracing Authority. Gideon has acted for online gambling companies, solicitors firms, accountancy firms, banking services complainants, boxers, rugby players, jockeys.
National Anti-Doping Panel v T (2018) – Successfully acting for boxer charged with doping offence
Gambling Commission v X Ltd (2016) – Director of online gambling company cleared of wrongdoing
British Horseracing Authority v X (2015) – Acted for jockey charged with illegal betting
Tax Appeals
Gideon has been instructed by HMRC to appear in the first tier tax tribunal. Since taking silk, Gideon has not accepted instructions from public bodies and takes appellant work.
Trading Standards
Gideon has appeared in a large number of trading standards cases, particularly as they relate to the construction industry practice.
Professional Memberships
- Criminal Bar Association
- Association of Regulatory and Disciplinary Lawyers
- Proceeds of Crime Lawyers Association
- Chatham House
Awards, Qualifications & Other
- Cambridge University, Fitzwilliam College – BA, 1994 (1912 Academic Scholar, Academic Prize for top mark in year 1993)
- Inns of Court School of Law – BVC 1995 – 1996 (Harmsworth Scholarship, 1995 and Diplock Major Scholarship, 1995)
Direct Access
Gideon Cammerman KC is qualified to accept instructions directly from clients and is registered under the Bar Council’s Public Access Scheme, meaning that members of the public who seek specialist advice can come directly to him. In addition, he welcomes instructions from solicitors, in-house law departments, qualified foreign lawyers, and clients licensed by the Bar Council to give instructions directly to barristers under the Bar Council’s Licensed Access Scheme. For more information please visit our Direct Access page here.