SILK PROFILE
Mark Watson KC

Mark Watson KC

UK Bar 2026

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Ranked in 3 practice areas

About

Provided by Six Pump Court

Practice Areas

Mark Watson is a leading barrister in health and safety and environmental law, with over two decades of experience advising and representing clients in complex regulatory and enforcement matters. He is regularly instructed in serious cases involving multiple fatalities, gross negligence manslaughter, and corporate manslaughter, acting for multinational corporations, government departments, and senior individuals. Notable cases include R v Lloyd, concerning four deaths during a paddleboarding excursion, and R v Squibb Group Limited [2019] EWCA Crim 227.

Mark has a deep understanding of technical evidence across disciplines such as engineering, hazardous processes, disease, and construction. He is also highly experienced in civil enforcement, including appeals against improvement and prohibition notices and judicial review proceedings.

In environmental law, Mark acts for water undertakers in pollution and drinking water investigations, and has advised on the exercise of Ofwat’s powers. He appeared in the high-profile Walleys Quarry litigation, successfully resolving abatement notice appeals via mediation chaired by Lord Carnwath. He is one of the few counsel instructed in drought permit and order applications, with expertise in the legal and technical complexities involved.

Mark also has specialist experience in confiscation proceedings arising from environmental and planning offences, particularly involving company directors, and has successfully represented major organisations in noise abatement notice appeals.

Chambers Review

Provided by Chambers

UK Bar

Environment - London (Bar)

Band 1
Band 1

Individual Editorial

Mark Watson KC is well respected as a prosecution and defence barrister handling cases concerning pollution, waste deposits and nuisances of various kinds. He acts for and against the Environment Agency and local authorities.

Health & Safety - London (Bar)

Band 1
Band 1

Individual Editorial

Mark Watson KC is a specialist in regulatory matters who represents defendants facing prosecution for corporate manslaughter and gross negligence manslaughter. He is an expert at handling cases arising from rail disasters.

Consumer Law - London (Bar)

Band 2
Band 2

Individual Editorial

Mark Watson KC is highly experienced at both prosecuting and defending food and trading standards cases, and appears on behalf of well-known retailers, local authorities and regulators such as the Food Standards Agency. He is also adept at matters regarding the enforcement of energy sector regulations.

Strengths

Provided by Chambers

  • Mark is a formidable barrister who is intelligent, approachable and articulate in the way he approaches every instruction and every client.

    EnvironmentUK Bar
  • Mark is a simply superb barrister who is tenacious, articulate, and has a genuine courtroom presence.

    EnvironmentUK Bar
  • Mark is user-friendly, knows the water industry well, and is very knowledgeable.

    EnvironmentUK Bar
  • Mark quickly develops a deep and strong understanding of each case and is able to convey the difficulties but also the merits of different points.

    EnvironmentUK Bar
  • Mark is an experienced advocate who is very persuasive, leads well in court, and is both measured and calm.

    EnvironmentUK Bar
  • He is a Rolls-Royce health and safety lawyer.

    Health & SafetyUK Bar

Ranked Barristers at Six Pump Court (41)

London (Bar)

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