Nicholls, Montgomery, and Knowles on The Law of Extradition and Mutual Assistance is the leading work in this complex and growing area of law. It provides a comprehensive and analytical treatment of the laws covering the extradition arrangements between the UK and other states, as well as international mutual assistance.

This edition provides an expanded discussion of the case law on human rights and an examination of the of the UK's post-Brexit extradition arrangements with the EU as well as detailed coverage of general extradition procedures. It includes detailed consideration of the interface between extradition and asylum. The fourth edition has been extensively revised to provide in-depth and practical coverage of these changes and gives the practitioner detailed guidance on the relevant provisions. Written by an expert author team, the book also includes an analysis of Interpol powers and procedures for the first time.