Mark Fenhalls QC > 23ES > London, England > Lawyer Profile



Mark is ranked as a leader at the bar in both crime and fraud in the last five editions of Chambers & Partners and The Legal 500. He prosecutes and defends the most serious and complex criminal cases. In recent years he has been advising companies and individuals facing investigations of alleged regulatory and/or criminal misconduct relating to their business activities.

Mark was Chairman of the Criminal Bar Association from September 2015 – September 2016.


Called 1992; Gray’s Inn.


Criminal Bar Association, Association of Regulatory and Disciplinary Lawyers, International Society for the Reform of Criminal Law. [In August 2001 he received the Society’s first “young lawyer of the year” award.


Rugby School; Cambridge University (1990 MA); London School of Economics (1991 MSc).

Lawyer Rankings

London Bar > Fraud: crime

(Leading Silks) Ranked: Tier 3

Mark Fenhalls QC23 Essex StreetAbsolute class performer. Manages client brilliantly and offers clear cogent advice.

23 Essex Street is ‘well respected in the field of fraud‘ thanks to ‘a strength in depth of counsel who are strong in this area‘. Its members have a solid track record in handling Ponzi schemes, boiler room frauds, money laundering, and tax fraud cases, to name but a few areas. Defence work is a core strength for the set, however, the team is also well known for handling prosecution instructions for the Crown Prosecution Service’s Specialist Fraud Division. Chambers houses former chair of the Fraud Lawyers Association, Mark Fenhalls QC, who will become Vice-Chair of the Bar in 2021.

London Bar > Crime

(Leading Silks) Ranked: Tier 3

Mark Fenhalls QC – 23 Essex Street ‘Absolute class performer. Manages clients brilliantly and offers clear cogent advice.

A good set with quality counsel‘, 23 Essex Street prosecutes and defends across a wide spectrum of criminal work; recent instructions include drugs conspiracies, people trafficking, and murders. Mark Fenhalls QC successfully prosecuted Shofael Israel who was convicted of the murder of Joy Morgan, following Morgan’s disappearance in 2018. On the defence side, Lisa Wilding QC acted for RAF pilot Tim Barry, who was acquitted of the alleged attempted murder of his girlfriend, instead receiving an 18-month community order for assault. Rossano Scamardella QC and Tom Godfrey represented Henry Long in a multi-defendant trial concerning the death of PC Andrew Harper in August 2019; Long pleaded guilty to manslaughter but was acquitted of murder in July 2020. Ahmed Hossain QC was elevated to silk in March 2020.

London Bar > Business and regulatory crime (including global investigations)

(Leading Silks) Ranked: Tier 3

Mark Fenhalls QC - 23 Essex StreetA compelling advocate.’

London Bar > Set overviews: England and Wales

London and Manchester-based 23ES has recently moved from its London home of Essex Street to 1 Gray’s Inn Square. 23ES has also announced the launch of a Small Claims Arbitration Service to resolve disputes with a value below £10,000, as well as a new Online Arbitration and Online Mediation Service. In other chambers news, Ahmed Hossain  took silk and Alan Blake, formerly of Thames and Chiltern CPS, joins chambers as of 26 October 2020; Blake, along with Alan Gardner , Daniel Fugallo , and Hannah Kinch  have been appointed Recorders with effect from 12 October 2020, all being assigned to the South Eastern Circuit. Mark Fenhalls QC has been elected vice-chair of the Bar 2021, with Kate Lumsdon QC appointed deputy head of chambers; Flora Page  has been appointed to the Legal Services Board for a four year term with effect from 1 August 2020; Paul Ozin QC has been elected the new chair of the Association of Regulatory & Disciplinary Lawyers.