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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.

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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

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.

Why US–UK Extradition Cases Require Specialist Defence

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.

Legal Defences Available in US–UK extradition proceedings

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.

The US–UK Extradition Timeline: What to Expect

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.

Russian Nationals and US Extradition: Key Considerations

Russian nationals living in the UK face a specific and growing challenge: simultaneous exposure to US extradition requests and Russian Interpol Red Notices. Our lead data shows that 30 of 181 Red Notice matters involved US-issued notices, making the United States the second most active issuing country in our caseload after Russia. For Russian nationals, the risk is often layered: a Russian prosecution may have generated an Interpol Red Notice, while a separate US federal investigation — frequently related to financial crime, cybercrime, or sanctions violations — may proceed independently.

In these multi-track cases, our lawyers coordinate the full range of defences: challenging the Russian notice through the CCF, defending the US extradition request before Westminster Magistrates’ Court, and where relevant, seeking interim measures under Rule 39 of the European Court of Human Rights. OFAC sanctions exposure is also a common complicating factor for Russian nationals facing US proceedings — our OFAC defence team works in parallel with our extradition lawyers to address this dimension. Learn more: OFAC Sanctions Lawyers.

If you are a Russian national in the UK and concerned about a US extradition request or a related Red Notice, contact us immediately. Early intervention is critical. Free consultation: +357 96 447475.

Frequently Asked Questions

What happens if I am arrested on a US provisional warrant before the formal extradition request arrives?

The US has 65 days from your arrest to submit full extradition papers to the UK authorities. During this period, you will be remanded in custody unless bail is granted — which Westminster Magistrates’ Court approaches cautiously in US cases given flight risk concerns. If the formal request does not arrive within 65 days, you must be discharged, though re-arrest remains possible if papers are later submitted. This window is critical for preparing your defence, gathering evidence for bail applications, and identifying preliminary challenges to the request.

Will I serve any US sentence in a British prison under a prisoner transfer agreement?

The UK and US are both parties to the Council of Europe Convention on the Transfer of Sentenced Persons, which theoretically permits repatriation. In practice, transfers from US federal custody to UK prisons are rare and discretionary — the US Bureau of Prisons must consent, and applications typically require serving a substantial portion of the sentence first. Federal sentences also carry different release structures than UK sentences, and time served calculations can be unfavourable. Transfer should never be relied upon as a defence strategy; it is a post-conviction possibility with no guarantees.

Can the US extradite me for tax offences or regulatory violations?

Tax offences are explicitly excluded from many extradition treaties, but the UK-US Treaty contains no blanket tax exemption. The US routinely seeks extradition for tax fraud, evasion, and related financial crimes where the conduct involves dishonesty beyond mere non-payment. Regulatory violations may qualify if they carry criminal sanctions in both jurisdictions and meet the dual criminality threshold. The distinction between civil tax disputes and criminal tax fraud becomes critical — US federal prosecutors often layer conspiracy and wire fraud charges onto tax cases to strengthen extradition requests and increase sentencing exposure.

How do US federal sentencing guidelines affect my Article 3 ECHR defence?

UK courts have accepted that disproportionately severe US sentences can engage Article 3 ECHR, though the threshold remains high. US federal sentencing guidelines — while now advisory post-Booker — often produce sentences dramatically longer than UK equivalents, particularly for drug and fraud offences. Mandatory minimums in certain cases remove judicial discretion entirely. Your defence must present expert evidence on likely sentencing exposure, conditions in specific federal facilities, and comparison with UK sentencing for equivalent conduct. The High Court has blocked extradition where life sentences or extreme terms would be grossly disproportionate to UK norms.

What role does the US prosecutor’s plea bargain offer play in UK extradition proceedings?

US prosecutors frequently communicate potential plea terms before or during extradition proceedings, sometimes offering reduced charges in exchange for waiving extradition rights. UK courts do not formally consider plea negotiations when determining extradition, but the existence of an offer affects strategic decisions. Accepting a plea bargain means forfeiting your right to contest extradition and proceeding directly to sentencing under US federal rules. Rejecting it preserves your defences but risks trial on the full indictment with substantially higher sentencing exposure if convicted. Any plea communication should be evaluated with both UK extradition counsel and US criminal defence attorneys.