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Michael Mather-Lees QC

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Michael Mather-Lees QC

Practice Overview

Michael Mather-Lees is head of the Criminal Team and Joint Head of the Regulatory team.
The Legal 500 current edition, describes him as a leading silk on the Wales and Chester Circuit…”Noted for his ability to evaluate complex evidence, particularly in medico-legal cases”
Chambers Legal Directory 2015 says “Primarily prosecutes complex criminal law cases. He is recommended in matters where there is significant medical evidence, such as murder and violent crimes.”

His practice covers complex criminal cases, having prosecuted and defended many homicide cases, complex sexual cases, including internet based offences and serious fraud ( including internet fraud) together with cases involving vast volume and very complex disclosure, up to and including the most sensitive levels. The majority of these cases, now involve the ability the both understand and be conversant with detailed computed technology and the use of web based information.

In addition he also undertakes a substantial amount of regulatory work, including Health and Safety, Police Discipline, Motor Vehicle Licencing and Regulatory, Medical Defence, Inquests, Public Enquiries and Environmental Law , Disciplinary Tribunal work and Courts Martial.

Having practiced, for many years, as a junior in complex cases of Clinical Negligence and personal injury, he has since being in Silk, again re-engaged in this area, having a particular and specialised interest in forensic medicine.

He has appeared successfully in numerous high profile cases, recent examples being;

  • R V H (2015) successfully defending a professional man, charged with causing death by dangerous driving. The case involved complex scientific evidence and detailed cross-examination of expert witnesses.
  • R v Belson (2015) Prosecution of murder/manslaughter.
  • R v KN (2015) Successful defence of Company Director, avoiding disqualification.
  • R v Pearce (2014) Successful prosecution of defendant denying homicide of baby, involving very complex medical evidence.
  • R v Parry, (2014) Successful prosecution for murder, involving diminished responsibility.
  • R v S (2014) Defence of person under very serious intellectual disability, charged with serious sexual offences.
  • R v Ali (2014) Defence of serious sexual offences
  • R v Mapps (2014) Defence –Murder
  • R v H (2014) Defence – Murder R v King (2013) Successful prosecution of Murder, loss of control.
  • R v Enfield (2012) successful prosecution Murder –loss of control.
  • R v A (2012) successful prosecution involving complex and life threatening injuries.

Further cases include the successful defence of a former police officer charged with conspiracy to pervert the course of justice. This was one of the largest criminal prosecutions ever undertaken.

  • R v Mouncher & Ors (2012)
  • R v Jones (2012) Defence of very high value drug conspiracy

Current instructions include cases of murder, serious sexual offences, baby shaking causing injuries of utmost severity and gross negligence manslaughter. He has appeared, successfully, in the Court of Appeal in a considerable number of cases, including, for example, the reported cases of:

  • R v Heath (2000) Crim LR 109: duress -involvement in drugs operation following threats of physical violence arising out of debt;
  • R v Anthony Court of Appeal (1998): inadmissibility of medical evidence -infant death x 2 (Munchausen/apnoea), substitution of verdict by virtue of additional evidence;
  • Broome v Perkins (1987) Crim LR 271: driving without due care and attention - diabetic in hypoglycaemic state - defence of automatism;
  • R v McCleary: mixed statements of partial confession
  • R v Steed (confiscation) 


'Known for his expertise in medico-legal cases' (Legal 500, 2015)

‘Noted for his ability to evaluate complex evidence, particularly in medico-legal cases’ (Legal 500, 2014)

"Michael Mather-Lees QC is recommended for medico-legal cases, as well as fraud and confiscation work" (Legal 500, 2013)

"New silk Michael Mather-Lees QC receives praise for his "exceptional intellect." He runs a broad practice but is particularly renowned for his work on fraud cases." (Chambers UK 2013)

"Michael Mather-Lees has a broad practice that also takes in fraud. He is a "very accomplished" and skilful court advocate, say sources. He acted in the assault trial of R v Mitchell". (Chambers UK 2012)

"Michael Mather-Lees is recommended for VAT, fraud and medico-legal cases". (Legal 500, 2012)

"Michael Mather-Lees really shines as a barrister who specialises in medico-legal cases and serious and complex fraud matters" (Chambers UK 2011)

"Michael Mather-Lees is “intellectually exceptional but also down to earth”’. (Chambers UK 2009)

'Michael Mather-Lees wins support as “he can mix it with the best of them in court”.  (Chambers UK2008)


  • Queen's Counsel
  • Head of Criminal Team
  • Joint Head of Regulatory Team 
  • CPS Advocates Panel - Fraud Level 4
  • CPS Advocates Panel  - Serious Crime Level 4
  • CPS Advocates Panel - Proceeds of Crime Level 4
  • CPS Advocates Panel - Rape Level 4


  • Member of the Inner Temple
  • Wales and Chester Circuit (Treasurer)
  • Western Circuit
  • The Association of Regulatory and Disciplinary Lawyers
  • Criminal Bar Association
  • European Bar Group
  • Wales Criminal Law Association


  • LL.B University of London


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