International Crime and Extradition

“A market leading extradition group that is certainly top of the tree." Chambers UK 2020 - A Client’s Guide to the UK Legal Profession

Criminal law is increasingly international. Actions taken by a person in one country may become the subject of an investigation in another, with the risk of this leading to an INTERPOL red notice or extradition request. Businesses and individuals may find themselves the subject of entirely unexpected enquiries and requests from investigators from other jurisdictions.

In some cases, attempts may be made to compel testimony for proceedings in other countries, or an individual's extradition may be sought. Some criminal offences, such as corruption offences and certain war crimes and associated allegations, can be prosecuted in a country that has little or no connection to the place where the offences are alleged to have occurred.

We have a superb network of international lawyers with whom we work on extradition, mutual legal assistance requests and international investigations into offences such as corruption, cartels, fraud and money laundering. The way in which a person or business responds to a request from a foreign jurisdiction may have profound consequences. Understanding the options from the beginning is essential to achieve the best result.

We are often asked to advise and represent overseas nationals in UK police investigations. We are experienced in working with and advising relevant embassies in relation to such investigations.

Whether facing a request for Mutual Legal Assistance (MLA), an extradition request, an INTERPOL red notice or investigation or prosecution in the UK for an offence occurring overseas, our lawyers have the knowledge and experience to help.

Kingsley Napley is rated as a Band 1 firm for Crime and Extradition by Chambers UK. We have a long-established reputation for advising on all aspects of international crime from financial crime to torture cases.

If you would like to discuss any of the issues mentioned above, please contact one of our specialist International and Extradition lawyers.

What clients and directories say

The 'very strong' team acts for individuals and corporations in cases concerning driving offences, extradition, sexual offences, fraud and matters with international elements."

Legal 500 UK 2020

"Extradition superstar" and considered to be "one of the best in the business."

Chambers UK, 2019 - about Rebecca Niblock

I would put them at the very top of the tree for their long history of defending very difficult cases."

Chambers UK, 2019

Kingsley Napley continues to do the best-quality extradition work. The service clients get is outstanding."

Chambers UK, 2018

They work to a very high standard, papers are immaculately prepared and you have every support. They are great to share ideas with, they understand the issues and they have a good rapport with counsel."

Chambers UK, 2017

Acts on highly complex matters, including those involving war crimes and Interpol red notices."

Chambers UK, A Client's Guide to the UK Legal Profession

They have got a wide range of experience to call upon for different jurisdictions and different problems."

Chambers UK, A Client's Guide to the UK Legal Profession

Substantial expertise in cross-border cases involving allegations of bribery and corruption, tax fraud, money laundering and insider dealing, amongst other issues, and the firm is also adept at dealing with investigations and prosecutions brought by various institutions."

Legal 500 UK


Read the third edition of Extradition law: a practitioner’s guide co-written by Rebecca Niblock and Edward Grange, Partner at Corker Binning






We’re pleased to announce that we’ll be hosting our annual conference on cross-border criminal law on Thursday 5 May 2022. This in-person event will take place in our London office and will focus on accountability for international crimes for both individuals and corporates. Click here to find out more how to register.  

Jonathan Grimes and Rebecca Niblock are both excellent. Rebecca is one of the most respected extradition defence lawyers in London – totally committed to her clients and with an incredible knowledge of the law and great sense of strategy; also a deep interest in her field of law generally, which I think really shows. I know Jonathan’s work mainly in the field of international criminal law, where he is also a leading figure – hugely committed to his clients, and with a deeper interest in the development of this area of law generally."

Legal 500 UK 2022

They are very good at ensuring their clients get the best service while also being very realistic with them and managing what they can expect. The team acts with finesse and finds every angle on a case."

Chambers UK 2021

One of the standout firms for extradition."

Chambers UK 2020

Viewed by some as 'a market leader in this field', Kingsley Napley LLP is notable for its 'wealth of experience in all areas of criminal and regulatory work' while its extradition practice is 'extremely well respected'."

Legal 500 UK 2020


Financial Sanctions and Export Controls

Our lawyers advise clients facing a criminal investigation or prosecution for a breach of sanctions and for individuals who have been made the subject of sanctions or restrictive measures.


Kingsley Napley has a wealth of experience in successfully defending extradition requests having worked in this field for several decades.

Crimes of Universal Jurisdiction

Travel to the UK can occasionally bring about unexpected consequences. There are a range of criminal charges that can be faced by non UK nationals even though the alleged criminal acts may have occurred abroad and may not involve the UK in any way.


An Interpol Red Notice can severely inhibit a person’s liberty, and have drastic consequences for a person’s reputation. We can assist in Red Notice cases by engaging with Interpol either prior to or following the issue of a Red Notice.

Mutual Legal Assistance

Robustly defending requests from foreign jurisdictions is not for the faint-hearted or inexperienced. Our lawyers are recognised leaders in the field.

Jurisdictional Issues

The team at Kingsley Napley is experienced in acting for companies who are subject to criminal investigation and prosecution either by multiple domestic or else by domestic and overseas agencies.

Political Affairs

Our international work includes dealing with the suite of issues that may arise from politically motivated persecutions.

Business and Human Rights

Consumers and regulators increasingly expect companies to demonstrate a commitment to human rights, where companies fall short, they increasingly face both reputational and legal consequences.

International Protection

Our International Protection group offers comprehensive multijurisdictional advice from our specialist immigration, criminal and public law teams.

International Crime and Extradition Insights

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Extradition post-Brexit - Áine Kervick quoted in The Law Society Gazette

Brexit deal: UK takes step back in cross-border enforcement - Louise Hodges quoted in GIR

Attorney General's rule of law record could hinder EU extradition deal - Rebecca Niblock comments in Free Movement

Kingsley Napley's third International Criminal Law Conference taking place on 28 January 2020: Justice and Rights

International Criminal Law Roundup - Q4 2019

International Criminal Law Roundup - Q3 2019

International Criminal Law Roundup - Q2 2019

Julian Assange could face extradition requests from two countries: What happens next? - Katherine Tyler quoted in TIME

International Criminal Law Roundup - Q1 2019

Brexit ‘will slow bribery policing’ - Louise Hodges quoted in The Times

Sanctions regulator forces banks to tighten up compliance - Rebecca Niblock quoted in Law360

UK Judges block extradition of Russian tax fraud suspect - Rebecca Niblock quoted in Law360

Judges block extradition of Russian oligarch over torture concerns - Rebecca Niblock comments in The Times

Russian bid to head Interpol fails, but concerns of abuse remain - Rebecca Niblock comments

Overseas Production Orders – data access made too easy? Rebecca Niblock writes for Global Investigations Review

Jonathan Grimes writes for The Times

'A battle between law and politics' - Rebecca Niblock has been quoted in The Times

GIR 100 2017: Kingsley Napley a world leader in cross-border investigations

International Criminal Law – A month in review – May 2017

International Bar Association War Crimes Committee conference - The Legal Challenges of Modern Warfare: The Peace Palace, The Hague, 30 – 31 January 2016

Why EU Directives matter: the risks to British citizens

House of Lords: Extradition report published

IBA Annual Conference on International Criminal Law: 31 January – 3 February 2015, The Hague

McKinnon extradition response: a change in extradition law?

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Extradition post-Brexit: the Irish questions answered

Extradition post-Brexit: the Irish questions

Extradition post-Brexit: plus ça change, plus c’est la même chose?

EU Member States’ reluctance to extradite their own nationals to the UK

Extradition post-Brexit: the TCA at a glance

Challenging INTERPOL Red Notices: what do the CCF’s decisions tell us? Part Four - Unfunded Or Bounced Cheques

Challenging INTERPOL Red Notices: what do the CCF's decisions tell us? Part Three - Decisions Not To Extradite

Challenging INTERPOL Red Notices: what do the CCF’s decisions tell us? Part Two - Politically Motivated Cases

Challenging INTERPOL Red Notices: what do the CCF's decisions tell us? Part One - Merits Of The Case

The UK assumes responsibility for its sanctions policy

Extradition (Provisional Arrest) Act 2020 – Bill receives Royal Assent

The UK reacts to China’s increased pressure on the pro-democracy movement in Hong Kong and its overall human rights record

Extradition (Provisional) Arrest Bill: Second Reading

On its way: The UK-US Bilateral Data Access Agreement

Dying hope for a post-Brexit extradition deal

Mutual Legal Assistance in action - Met Police raid London addresses at request of Brazilian authorities

What is an Interpol Red Notice and what are the practical implications for Anne Sacoolas?

Mutual Legal Assistance and the US: a more anxious case than usual

What are Interpol Red Notices and how can you get them removed?

More nails in the coffin for Russian Federation extradition requests?

Amendments made to the process of extradition requests under the Extradition Act 2003

Extradition (Provisional) Arrest Bill: a sticking plaster?

Torture charges dismissed against Agnes Reeves Taylor

Changes proposed by the Extradition (Provisional Arrest) Bill

Fast-track electronic evidence gathering from overseas – One step closer

Cross-border criminal justice post-Brexit – Operation Yellowhammer

International Criminal Court at 21: controversy still remains

London Climate Action Week: International criminal law and the environment – considering a law of ‘ecocide’

Widening the net: investigating and prosecuting offences overseas

The International Criminal Court - Limits to Jurisdiction in the US

New powers to gather electronic evidence from overseas agreed

Dubai: The enforcement of orders made in family proceedings and the role of Interpol

No deal Brexit and financial crime: proposed regulations published

No deal Brexit: what this would mean for extradition?

Corporate and individual accountability for international crimes: Kingsley Napley hosts second International Criminal Law Conference

“A sorry state of affairs” – Lazarov v Bulgaria and R (Lazarov) v Westminster Magistrates’ Court

MPs scrutinise rules for new powers to gather electronic evidence overseas (OPO)

Good reason to reconsider the benefit of the doubt accorded to Russia in extradition cases

A South Korean president will not prevent the abuse of INTERPOL: root and branch reform is needed

#Brexit Withdrawal Agreement: transitional arrangements for the European Arrest Warrant

Global Britain: The Future of UK Sanctions Policy

The Crime (Overseas Production Order) Bill - We must not lose control of data sharing

Brexit and the EAW: at least now we know what we don’t know

ICC Crime of Aggression comes into force

The death penalty: do we, or do we not, oppose it?

Why the International Criminal Court should be supported

Long arm of the law: new powers to gather electronic evidence overseas

Celebrating 20 Years of the Rome Statute of the International Criminal Court

International families and the price of child relocation without consent

Guest blog: Brexit and police and judicial cooperation: it’s time “to speak the truth”

Tackling the big issues in International Criminal Justice

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