Skip to Content
‘The clerking team is great. Contact them and immediately somebody will get back to you with a solution.’Chambers and Partners 2014
Extradition Law and Mutual Assistance


Matrix is renowned as a ‘go-to set’ for mutual legal assistance and extradition. Managed by a ‘highly professional’ practice team that is ‘exceptionally helpful and efficient’, the team has ‘a depth of expertise that is second to none’ (Legal 500, 2019).

The Matrix MLA and extradition team is ranked ‘tier 1’ by the Legal 500 and by Chambers & Partners.

Mutual criminal legal assistance is now one of the most significant, and fast-emerging, areas of criminal practice and meaningful effective pre-charge assistance is often crucial to avoiding extradition exposure. A significant part of the work that the Matrix MLA and extradition team undertakes involves providing confidential advice to corporate and individual clients to safeguard against MLA exposure in cross-border criminal cases, especially those involving parallel investigation by the FCA / SFO and DoJ involving allegations of financial crime and corruption.

Matrix’ broad cross-disciplinary practice makes it particularly adept at assembling and coordinating multi-jurisdictional legal teams in order to tackle pre-charge criminal exposure from all available angles.

The team has particular experience in the strategic utilisation of the extensive range of international law pre-charge investigatory cooperation measures to avoid situations escalating to the point of charge.

Matrix also offers significant expertise in relation to Interpol Red Notice challenges. The team has enjoyed considerable success in dealing with politicised or politically motivated Red Notices and diffusions, including in securing their immediate suspension.

In the event that a charge is unavoidable, Matrix possesses many of England’s leading and specialist extradition practitioners. The team includes the editors of the principal extradition law textbook; Nicholls, Montgomery & Knowles on Extradition, OUP. Over the past two decades the team has been at the forefront of every significant development of this area of the law; from General Pinochet to Julian Assange.

Members are regularly called upon to advise and act in proceedings throughout the common law community globally, including the Caribbean and Asia, and before the Privy Council.

Our lawyers in this area

  • Alex Bailin QC Alex Bailin QC
    Called: 1995 Silk: 2010 CV
  • Joanna Buckley Joanna Buckley
    Called: 2011
  • Michelle Butler Michelle Butler
    Called: 2007
  • Anita Davies Anita Davies
    Called: 2011
  • Jonathan Glasson QC Jonathan Glasson QC
    Called: 1996 Silk: 2013 CV
  • Sir Anthony Hooper Sir Anthony Hooper
    Called: 1965
  • Tamara Jaber
    Called: 2013
  • Jessica Jones Jessica Jones
    Called: 2013
  • Helen Law
    Called: 2005
  • Lord Ken Macdonald QC Lord Ken Macdonald QC
    Called: 1978 Silk: 1997
  • Claire Montgomery QC Clare Montgomery QC
    Called: 1980 Silk: 1996 CV
  • Matthew Ryder QC Matthew Ryder QC
    Called: 1992 Silk: 2010
  • Hugh Southey QC Hugh Southey QC
    Called: 1996 Silk: 2010 CV
  • Mark Summers QC Mark Summers QC
    Called: 1996 Silk: 2014 CV
  • Professor Takis Tridimas Prof Takis Tridimas
    Called: 2000
Back to top