United Kingdom Extradition Law — Case Law, Legal Framework and Procedure

Extradition cases involving United Kingdom — Requested and Requesting State

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United Kingdom

United Kingdom Extradition Law & Case Law — 32 cases

Case Law
Remaining sentence calculation and principle of speciality in extradition proceedings under Turkish Law
Summary
The case concerned an extradition request submitted by the United Kingdom against H.D.B. for the execution of the remaining portion of a sentence imposed for intentional bodily harm.The extradition request arose after the requested person allegedly violated parole conditions relating to a six-year prison sentence imposed by the Wood Green Crown Court in 2008.The Aydın 4th Heavy Penal Court found the extradition request admissible under Law No. 6706.The defence appealed, arguing inter alia that:- the sentence had effectively been completed following release in 2019;- the UK execution system had subsequently changed;- extradition would expose the requested person to disproportionate and inhuman punishment;- the extradition request failed to clearly specify the remaining executable sentence;- specialty-principle safeguards were insufficient.The Turkish Court of Cassation held that the lower court failed to sufficiently determine the exact remaining custodial sentence still executable in the United Kingdom.The Court emphasized that:- extradition detention may not exceed the remaining enforceable sentence;- proportionality assessment required clarification of the precise balance of sentence remaining;- supplementary information should have been requested from the requesting State.The Court further held that the judgment inadequately addressed specialty-principle protections under Article 10(4) of Law No. 6706.The extradition admissibility judgment was therefore quashed.
15/09/2025 · Turkish Court of Cassation (Yargıtay), 5th Criminal Chamber · E. 2025/6232, K. 2025/9055
🇹🇷Turkey → 🇬🇧United Kingdom
Rejected (procedural grounds)Extradition
Extradition, nationality discrimination and freedom of expression: leave to appeal conditionally granted in Assange v United States
Summary
Extradition may be subject to appeal where the requested person establishes an arguable risk of prejudice at trial by reason of nationality, including where such prejudice may affect access to fundamental constitutional protections in the requesting State. In such circumstances, issues under Article 10 ECHR (freedom of expression) may arise, but only insofar as they are consequential upon the risk of discriminatory treatment. Extradition may also be challenged where assurances provided by the requesting State are insufficient, particularly in relation to the death penalty and the rule of specialty, with the court entitled to require further guarantees before determining whether the appeal should proceed. By contrast, the prohibition of extradition for political offences contained in an unincorporated bilateral treaty does not confer directly enforceable rights in domestic law, nor can it operate as an independent bar to extradition under the Extradition Act 2003. The statutory framework constitutes an exhaustive code, and extradition must be ordered unless a specific statutory bar is established. Finally, at the leave stage, the appellate court is not concerned with determining the merits of the grounds, but only with whether they disclose a real prospect that the lower court’s decision was wrong.
26/03/2024 · UK High Court of Justice · AC-2022-LON-001745 and 1746
🇬🇧United Kingdom → 🇺🇸United States
PendingExtradition
Country Contributor
Edward Grange
Corker Binning
Edward Grange is regarded as one of the leading extradition lawyers in the UK, advising on complex, high-stakes extradition, international criminal, and serious criminal matters.
He is recognised as a Star Individual for Crime: Extradition in Chambers UK 2026, where he is described as “a fantastic extradition lawyer – the best of the best.”
He is widely recognised for advising individuals in complex, sensitive, and often high-profile cases with significant international dimensions. With over 18 years’ specialist experience, he has advised and represented individuals facing extradition to jurisdictions across the world and has an exceptional track record in successfully resisting extradition requests. His work includes defeating requests from the United States, Russia, India, and the United Arab Emirates. He has conducted hundreds of extradition cases arising from almost every EU member state and was a member of the legal team advising Julian Assange.
His extradition expertise places Edward at the forefront of legal challenges involving INTERPOL. He regularly advises individuals who are subject to, or at risk of becoming subject to, INTERPOL Red Notices and diffusion requests. He has successfully made representations to the Commission for the Control of INTERPOL’s Files (CCF) securing the deletion of Red Notices and, in pre-emptive cases, preventing notices from being issued altogether.
Edward is an experienced criminal defence lawyer with a career spanning all stages of the criminal process, from police station representation through to contested trials. His criminal litigation practice covers the full spectrum of serious criminal allegations, including complex fraud, serious sexual offences, and offences involving serious violence. He has particular expertise in representing children and young people accused of grave criminal conduct, having spent many years practising extensively in the London Youth Courts. He also advises on road traffic offences, from regulatory matters through to allegations of causing death by dangerous driving.
Edward is the co-author of Extradition Law: A Practitioner’s Guide (Legal Action Group, 3rd edition, 2021), the leading practitioner text on the subject. He is the co-founder and former Chair of the Defence Extradition Lawyers Forum and was elected to the Advisory Board of the European Criminal Bar Association in October 2024. He has given expert evidence before the House of Lords Select Committee on Extradition, with his evidence featuring extensively in its final report. Edward is also a regular commentator in the national and international media on extradition law and cross-border criminal justice
Edward is the co-host of Corker Binning’s podcast, Full Comment, where he discusses developments in criminal law, extradition, and cross-border investigations.
Country Contributor
Rebecca Niblock
Kingsley Napley
Rebecca specialises in extradition and cross-border criminal matters. She advises individuals, families and family offices facing complex criminal investigations, extradition proceedings and cross-border enforcement action with an international dimension.
Her practice focuses on extradition, INTERPOL and mutual legal assistance (MLA) requests, as well as wider cross-border enforcement issues. Many of her cases involve sensitive issues and require careful coordination across multiple jurisdictions, often alongside reputational or political considerations. Her work frequently involves matters where criminal proceedings intersect with reputational, political or diplomatic considerations.
Rebecca also represents clients in serious and complex financial crime matters, including allegations of fraud, bribery and corruption, and in investigations conducted by agencies such as the Serious Fraud Office and Financial Conduct Authority. She is particularly experienced in cases involving parallel proceedings or competing enforcement interests in different jurisdictions.
She has extensive experience acting in extradition cases involving requests from the United States, EU member states, India and jurisdictions across the Middle East and the CIS. She regularly leads high-stakes matters raising complex issues of international law, human rights and abuse of process.
Rebecca works closely with private client advisers, trustees and reputation specialists when managing cross-border criminal risk for individuals and families.
She is ranked as a Star Individual for Extradition by Chambers and Partners and as a Leading Partner in Legal 500.
Rebecca is co-author of Extradition Law: A Practitioner’s Guide, one of the leading texts in the field, and contributes regularly to legal and policy discussions on cross-border criminal enforcement.
She holds a PhD in the History of Art from the University of Bristol.
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