Ben Joyes


Ben specialises in international criminal law, extradition, international human rights and complex financial crime.

Background and expertise

Ben has acted in some of the most high profile international criminal cases of the last decade, in particular before the International Criminal Court. He also regularly represents individuals and requesting States in extradition proceedings before Westminster Magistrates’ Court and the Administrative Court. Ben has significant expertise in complex cases involving international fraud, bribery and corruption.

Thanks to his expertise in diverse but complementary areas of law, Ben brings a unique perspective to all of his cases. He has extensive experience drafting incisive arguments concerning legally and factually complex issues, and is highly regarded for the quality of his written work. Having worked on the ground with legal and investigative teams in Africa, South East Asia and Europe, Ben prides himself on his collaborative approach to complex, document-heavy cases.


Ben represents and conducts advisory work on behalf of governments, organisations and individuals. The international nature of his practice demands that he is comfortable operating in adversarial and inquisitorial systems. Similarly, he acts in cases before tribunals that adhere to both the civil and common law traditions.

Ben is comfortable dealing with the vast volumes of evidence that are commonplace in international litigation. Experienced operating in hostile conditions, he conducts sensitive defence investigations with care and precision. In both Kenya and Cambodia, Ben interviewed sensitive witnesses and provided legal assistance to police, military and communications experts. He has worked closely with intelligence professionals on the collection and analysis of complex financial and communications evidence.

Ben has been appointed to the lists of counsel of both the International Criminal Court and the Kosovo Specialist Chambers. He also appears on the List of Legal Consultants of the Extraordinary Chambers in the Courts of Cambodia.


Ben is a specialist extradition practitioner. He regularly represents individuals and requesting States in contested extradition hearings before Westminster Magistrates’ Court and on appeal before the High Court. Ben also advises on import extradition cases.

Between 2017-2018, Ben undertook an 18-month secondment with the CPS Extradition Unit, during which he conducted hearings and carried out casework on a substantial number of complex cases under both Parts 1 and 2 of the Extradition Act 2003.

Ben has been appointed to the CPS Specialist Extradition Advocate Panel (Level 2)


Ben represents individuals and organisations in cases involving violations of international human rights law. He has developed particular expertise in respect of a number of regional tribunals, including the European Court of Human Rights, Court of Justice of the European Union, African Court on Human and Peoples’ Rights, the African Commission on Human and Peoples’ Rights and the Southern African Development Community Tribunal.

Ben is able to assist clients prior to the issuance of proceedings until the conclusion of the case. He is comfortable providing practical advice on investigations, as he has significant experience managing projects concerned with the documentation and analysis of potential breaches of international human rights law. Once proceedings have commenced, Ben is able to draw upon his considerable experience before the international tribunals to ensure that all applications – whether oral or written – are prepared and delivered with forensic precision.

Prior to joining the Bar, Ben spent time at a human rights organisation in Phnom Penh, Cambodia. In Cambodia, Ben was involved in initiatives concerned with domestic and regional human rights issues, including the development of a nation-wide trial monitoring project, freedom of expression protection, and advocacy concerning land rights and land-grabbing.


Ben has substantial experience in large-scale international fraud, bribery and corruption cases.

Ben has particular expertise as concerns disclosure in complex fraud and bribery cases. He is currently instructed by the Serious Fraud Office to manage the disclosure process in a prosecution being brought under the Bribery Act 2010. He also has significant experience in cases involving Deferred Prosecution Agreements and the agent/principle distinction as set out under the Prevention of Corruption Act 1906.

Ben has been appointed to the SFO Advocate Panel (C Panel).

Notable Cases

The Prosecutor v. Dominic Ongwen, International Criminal Court

Ben is currently engaged as a legal consultant for the defence team representing Dominica Ongwen, the first former child soldier to be tried at the Court.

News story here

The Prosecutor v. Uhuru Kenyatta, International Criminal Court

Ben was a long-term member of the defence team that represented Uhuru Kenyatta, the President of Kenya, before the ICC. Ben played a key role in laying bare the investigative flaws in the Prosecution’s case that eventually led to the withdrawal of all charges and the termination of the case in 2015.

News story here

Case 004/02, Extraordinary Chambers in the Courts of Cambodia

Ben was also instructed to represent Ao An, an alleged former Khmer Rouge leader accused of genocide, crimes against humanity and violations of the 1956 Cambodian Penal Code.

News story here


Ben has delivered lectures and training sessions on international criminal law, international human rights and extradition, for example:

  • Delivered training course for the Crown Prosecution Service Extradition Unit entitled ‘Fast-Track Extradition Training for Counsel’, 2018.
  • Lecture entitled ‘The Role of the Defence’, ECCC, Phnom Penh, 2016.
  • Lecturer in Law, Royal University of Law and Economics, Phnom Penh, ‘Conversion, Land-grabbing, Corruption and International Human Rights’, 2015-2016.
  • Lecture entitled ‘The African Court on Human and Peoples’ Rights’, HMS President, London, April 2014.
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PROFILE: Ben Joyes

Year called




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Confiscation / POCA

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Corporate Offences

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Financial Crime

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Fraud, Bribery & Corruption


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Corporate Offences

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Financial Crime

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Fraud, Bribery & Corruption

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Human rights law

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International Terrorism


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Inner Temple

Criminal Bar Association

Defence Extradition Lawyers' Forum


CPS Specialist Extradition Advocate Panel (Level 2)

Serious Fraud Office Advocate Panel – C PaneL

International Criminal Court – List of Associate Counsel

Kosovo Specialist Chambers – List of Counsel

Extraordinary Chambers in the Courts of Cambodia – List of Legal Consultants

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