Quinton John Newcomb | Fieldfisher
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Professional background

Professional background

I have represented witnesses and suspects, individuals, and corporates, in some of the most high-profile commercial crime investigations and prosecutions of the past decade, including those in relation to Alstom, Rolls Royce, Rio Tinto, and ENRC.  

I have managed many crisis responses for companies, including those entailing the conduct of complex cross-border internal investigations across the globe and advised multinational companies on their economic crime compliance procedures.  Recent matters have included conducting investigations involving financial services and listed companies, which has required intensive engagement with key stakeholders, including auditors and regulators, in addition to shareholders.  My team and I are proactively engaged in advising multinational clients on their fraud and broader economic crime risk assessments, in response to the Economic Crime and Corporate Transparency Act 2023.  Other recent experience also includes advising companies responding to enquiries from HMRC, NCA, and the SFO, advising on criminal law implications of ransomware attacks, and assisting those with exposure to investigations for breaches of health and safety regulation.

I have acted as an expert witness in relation to commercial criminal law. 

My experience includes working with clients across diverse sectors including energy and extractives, financial services, food and drink, transport, logistics, and sport.

I was appointed as criminal Recorder (part-time Crown Court judge) in October 2020.

A keen sportsman, I am a veteran of five consecutive Lawyers’ Cricket World Cups, in which I led the Bar of England and Wales as captain, and two marathons (London and Vienna).

Awards & recognition

Awards & recognition

GIR 100, 2025

Quinton... is a master of quiet, thoughtful tactical thinking, with a tone and style always suited to the moment.  He is an intellectual powerhouse with a long-term strategic mindset, rather like a grand chess master...a calming influence in emotionally charged board-level situations.

Chambers & Partners, 2025

Quinton is a class act. He is shrewd, astute, clever and diplomatic. He is very professional and clear in his communication. Quinton had a tone of calmness and empathy, but also kept our discussions very objective. He kept to his word.

Legal 500, 2025

Quinton Newcomb is an experienced corporate crime barrister who is technically very gifted and has an excellent client manner. Unflappable and unfailing courteous under pressure.

 

Lexology Index for Investigations, 2026

Recommended in Lexology Index for Investigations, 2026.

Doyle’s Guide for White Collar Criminal Law, 2026

Recognised in Doyle’s Guide for White Collar Criminal Law, 2026.

Authored pieces

All Resources
An art gallery with ornate, purple-hued frames mounted on the wall. The frames extend out towards the viewer, showing their intricate detailing. The gallery's corridor stretches into the distance, with a few people blurred in the background.
Dispute Resolution
Insight

When a failed sanctions prosecution still matters: lessons from the Hauser & Wirth case

15.07.2026
The dismissal of criminal charges against Hauser & Wirth and fine art logistics company Artay Rauchwerger Solomons is an important moment in the UK’s sanctions enforcement landscape.
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A close-up of an LED screen displays a financial graph with a cityscape in the background. The screen shows a series of dots forming line patterns, representing data. The scene is illuminated with blue and pink lights, giving it a futuristic feel.
Fraud, Financial Crimes and Investigations
Insight

Fieldfisher contributes to Legal 500's UK Bribery & Corruption Comparative Guide 2026

03.07.2026
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Several police officers in bright yellow jackets stand with their backs turned, marked "POLICE" in bold blue letters. They appear to be engaged in crowd control or monitoring an event on a city street with blurred people and barriers in the background.
Dispute Resolution
Insight

Corporate liability redrawn: Senior managers and the Crime and Policing Act 2026

08.05.2026
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A close-up of an LED screen displays a financial graph with a cityscape in the background. The screen shows a series of dots forming line patterns, representing data. The scene is illuminated with blue and pink lights, giving it a futuristic feel.
Financial Services
Insight

Navigating the future: Horizon scanning key changes in UK and EU financial crime law in 2026

25.02.2026
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Insight

ECCTA compliance series: Top Level Commitment

03.09.2025
Fraud prevention starts at the very top. In our first video exploring the six reasonable fraud prevention procedures, Quinton Newcomb andNatalie Quinlivan explore "Top Level Commitment". The board and those in senior management roles carry ultimate responsibility for preventing and detecting fraud.
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What others say…

GIR 100, 2025

Quinton... is a master of quiet, thoughtful tactical thinking, with a tone and style always suited to the moment.  He is an intellectual powerhouse with a long-term strategic mindset, rather like a grand chess master...a calming influence in emotionally charged board-level situations.

Chambers & Partners, 2025

Quinton is a class act. He is shrewd, astute, clever and diplomatic. He is very professional and clear in his communication. Quinton had a tone of calmness and empathy, but also kept our discussions very objective. He kept to his word.

Legal 500, 2025

Quinton Newcomb is an experienced corporate crime barrister who is technically very gifted and has an excellent client manner. Unflappable and unfailing courteous under pressure.