Extradition from the US to the UK

UK-US extradition is governed by the UK-US Extradition Treaty 2003, implemented in UK domestic law by the Extradition Act 2003. The United States is a Category 2 country under the Act, meaning US requests must demonstrate a prima facie case — a lower evidential threshold than many appreciate, but one our lawyers scrutinise rigorously. The Treaty covers a wide range of offences and the US frequently pursues UK-based individuals in connection with financial crime, computer fraud, drug offences, and terrorism-related charges. The political and public interest implications of US extradition requests make specialist legal representation essential from the earliest stage.

The US submits a formal extradition request to the UK Home Secretary, who certifies it if the request meets treaty and statutory requirements. The requested person is arrested — often following an Interpol Red Notice or provisional warrant — and brought before Westminster Magistrates’ Court for an initial hearing. The full extradition hearing examines whether the offence is extraditable, dual criminality, and all applicable bars to surrender. Either party may appeal to the High Court and, with leave, to the UK Supreme Court. If extradition is approved by the courts, the Home Secretary has final discretion to order or refuse surrender, with Article 3 and Article 8 ECHR being particularly relevant at that stage.

US extradition cases are among the most high-profile and legally complex we handle. Our extradition defence lawyers examine the US request in meticulous detail, challenging the prima facie case, raising the forum bar where UK courts are the appropriate venue, and building Article 3 ECHR arguments based on detention conditions and sentencing proportionality. We challenge dual criminality and the extraterritorial reach of US charges — particularly in computer fraud and financial crime cases. We apply for bail from the outset and mount full appeals where necessary. Where Interpol Red Notices accompany the request, our Interpol Defence Lawyers work in parallel to pursue notice removal and prevent further international enforcement action.

Facing extradition to the United States requires experienced specialist representation from the very first hearing. Contact our extradition defence team immediately for a free initial consultation. We are available 24 hours a day, seven days a week — call us now or complete our contact form to discuss your case in complete confidence.

The United States and the United Kingdom are bound by a 2003 Extradition Treaty, widely criticised by defence lawyers for the asymmetric evidentiary threshold it imposes. The UK must demonstrate probable cause to extradite to the US — a lower bar than the prima facie evidence standard traditionally required. This imbalance means British nationals and residents are disproportionately exposed to US extradition requests.

High-profile cases involving financial crime, wire fraud, computer misuse, and narcotics offences are increasingly processed under this treaty. US federal prosecutors have successfully extradited individuals from the UK on charges that would not meet extradition standards in other bilateral agreements. Our lawyers have specific experience defending clients facing US extradition requests, including cases involving OFAC sanctions violations, money laundering allegations, and cybercrime charges.

Several statutory and human rights grounds can be raised to resist extradition from the UK to the United States:

• Forum bar: Since 2013, UK courts can decline extradition if the majority of the alleged conduct occurred in the UK and it would be in the interests of justice for the case to be tried domestically.
• Passage of time / extrinsic delay: Where a substantial period has elapsed since the alleged offence, extradition may be unjust or oppressive.
• Mental or physical condition: A person’s health may render extradition incompatible with Article 3 ECHR (prohibition on inhuman or degrading treatment).
• Double jeopardy: If the person has already been tried in the UK or another jurisdiction for the same conduct, extradition cannot proceed.
• Political offence: Certain politically motivated prosecutions may be resisted on this ground, though US–UK jurisprudence has narrowed its scope.
• Article 8 ECHR (private and family life): The proportionality of extradition against the impact on family members, particularly dependent children, is regularly litigated in the High Court.

Our extradition lawyers assess each case against all available grounds and advise on the prospects of success at each stage — from the initial Westminster Magistrates’ Court hearing through to the Divisional Court and, where appropriate, the Supreme Court or European Court of Human Rights.

Understanding the procedural timeline helps clients plan their defence effectively. US–UK extradition typically proceeds as follows:

• Arrest and initial hearing: On execution of the provisional warrant, the arrested person appears before Westminster Magistrates’ Court and is informed of the request.
• Extradition hearing: The judge considers whether the statutory requirements are met, including the double criminality test and any prima facie or probable cause evidential threshold.
• High Court appeal: Either party may appeal the extradition judgment to the Divisional Court (King’s Bench Division) on questions of law or fact.
• Secretary of State’s decision: If extradition is ordered, the Secretary of State for the Home Department has 28 days to order extradition or decline on specified grounds.
• Further appeals: Supreme Court permission may be sought if a point of law of general public importance arises.

The entire process can take 12–36 months. Early and proactive legal intervention — before a provisional warrant is issued — gives the strongest chance of successfully resisting extradition. Call +357 96 447475 for a confidential assessment.