Extradition from the US to the UK
Facing extradition to the United States? Our specialist extradition defence lawyers provide urgent legal advice and vigorous representation under the UK-US Extradition Treaty and the Extradition Act 2003.

Legal Framework
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.
Grounds for Refusing Extradition
- Human rights — Risk of an Article 3 ECHR violation due to conditions of detention in the US, or disproportionate sentencing amounting to inhuman treatment
- Forum bar — The alleged offending occurred substantially in the UK and it is more appropriate for the case to be tried here
- Double jeopardy — The person has already been tried in the UK or another jurisdiction for the same conduct
- Passage of time — Undue delay since the alleged offence would make extradition unjust or oppressive
- Mental or physical health — Extradition would be incompatible with the person’s health needs or Article 8 ECHR rights
- Political offence — Where the extradition request is politically motivated
- Specialty rule — Assurances must be given that the person will only face prosecution for the offence specified in the request
- Preventive Request Lawyer
The Extradition Process
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.
Our Defence Strategy
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.
Contact Our Extradition Defence Team
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.
Related Services