SILK PROFILE
Mark Fenhalls KC

Mark Fenhalls KC

UK Bar 2026

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Ranked in 2 practice areas

About

Provided by 23ES (23 Essex Street Chambers)

UK Bar

Practice Areas

Mark Fenhalls KC regularly appears in the most serious and complex of criminal cases from large scale Fraud and Corruption cases to Murder and Organised Crime

Mark is ranked in both Chambers and Partners and The Legal 500 in the areas of Financial and General Crime.

Mark advises in investigations into companies and individuals brought by national and international regulators and law enforcement agencies. Such investigations usually focus on allegations of fraud (criminal and civil), but frequently raise issues of commercial and contract law, public and administrative law, employment law, professional regulation, and regulatory compliance (including the duties of directors, ESG law and regulation).

Since being appointed a QC in 2014, Mark has held a unique combination of elected leadership roles at the Bar of England & Wales, serving as Chair of the Criminal Bar Association (2015-16), Leader of the South Eastern Circuit (2019-20), and in 2022 as Chair of the Bar of England and Wales.

These positions have given him extensive experience in dealing with government, politicians, press, and the full range of governance challenges faced by the Criminal and Civil Justice systems. He has worked closely with the senior Judiciary, state bodies and officials on a variety of projects and committees addressing capacity, sustainability and efficiency in the Justice System. In recent years this work has focused on mitigating the effects of the pandemic and assisting with “post-Covid” recovery.

In April 2023 he qualified as a commercial mediator with ADR ODR International

Professional Memberships

Criminal Bar Association

South Eastern Circuit

International Society for the Reform of Criminal Law

Fraud Lawyers Association

European Criminal Bar Association

Chambers Review

Provided by Chambers

UK Bar

Financial Crime - London (Bar)

Band 1
Band 1

Individual Editorial

Mark Fenhalls KC is the former chair of the Criminal Bar Association of England and Wales, as well as a high-profile practitioner in fraud and financial crime. His wide practice has seen him handle, among others, cases involving tax fraud and corruption with regard to public contracts. He has a mixed practice, with impressive experience both prosecuting and defending, and is rated for his expert advice in significant Serious Fraud Office cases.

Strengths

Provided by Chambers

  • Mark's cross-examination is clinically robust, fair-minded and to be admired by any aspiring advocate. Mark commands the respect of the bench whilst being able to relate to the jury with such ease.

    Financial CrimeUK Bar
  • Mark Fenhalls KC is one of the most focused and charming practitioners at the Bar. To see him in court is to witness a masterclass of advocacy.

    CrimeUK Bar

Ranked Barristers at 23ES (23 Essex Street Chambers) (45)

London (Bar)

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