JUNIOR PROFILE
James Williams

James Williams

UK Bar 2026

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Ranked in 3 practice areas

About

Provided by Henderson Chambers

Practice Areas

James practices in three core areas: group actions (in particular in product liability and industrial disease cases); general commercial law; and employment. Recent high-profile instructions include: the VW Vehicle Emissions litigation; the ongoing Nissan Vehicle Emissions litigation; the Seroxat product liability group litigation; the Cape v Dring litigation concerning non-party access to documents used in court, which reached the Supreme Court in February 2019; and the British Coal Coke Oven Workers group Litigation. He has also been acting for AstraZeneca on inquests and civil claims in relation to its Covid-19 vaccine. Before coming to the bar, James spent two years as an associate solicitor in the corporate group at Slaughter and May.

James maintains a broad employment practice acting for both Claimants and Respondents. He has wide experience of all aspects of statutory employment work including employment status, unfair dismissal, TUPE, discrimination, redundancy and whistleblowing. He appears frequently in the Employment Tribunal and EAT. He is also experienced in employment and business protection litigation in the civil courts involving employee competition, confidential information, wrongful dismissal and restrictive covenants. James has a particular interest in the law of working time and worker status, and acted as sole counsel for the claimant throughout one of the most significant cases on holiday pay to reach the ECJ in recent years: King v Sash Window Workshop Ltd C-214/16. The case is particularly relevant to the growing number of cases where the worker (like Mr King) is miscategorised during the employment relationship as self-employed and thus not paid any holiday pay. The case was described as a “bombshell judgment” and is of fundamental importance to workers’ rights in the gig economy. James has a number of cases currently in the EAT and is acting for the Claimant in the ongoing Main v Spadental litigation, raising important points regarding the post-Brexit approach to holiday pay claims. Helped by his experience in group actions and personal injury, particularly industrial disease, James is also familiar with the law of employer’s liability, health and safety and workplace injury claims. His commercial background means he is also happy to advise in employment disputes with a commercial dimension such as unfair prejudice claims, TUPE issues in an M&A context and bonus cases.

Career

Qualified as a solicitor 2008; Called 2010, Inner Temple; Judicial Assistant at the Court of Appeal (Arden LJ) in 2010; Junior Counsel to the Crown 2014-19 (C Panel) and 2021-date (B Panel).

Chambers Review

Provided by Chambers

UK Bar

Product Liability - London (Bar)

Band 3
Band 3

Individual Editorial

James Williams is regularly instructed in product liability and group actions, where he covers diesel vehicle emissions litigation and pharmaceutical related matters.

Group Litigation - All Circuits

Band 4
Band 4

Individual Editorial

James Williams has a busy group litigation practice which focuses on product liability, particularly in relation to pharmaceutical products, and industrial disease. He is instructed on high-profile cases including the diesel emissions litigation and the litigation concerning AstraZeneca's COVID-19 vaccine.

Employment - London (Bar)

Band 6
Band 6

Individual Editorial

James Williams is valued for his expertise in employment status and holiday pay disputes. He is regularly instructed by claimants and respondents, and is adept at handling restrictive covenants and TUPE matters.

Strengths

Provided by Chambers

  • James is really thorough and very brilliant.

    Product LiabilityUK Bar
  • James demonstrates a thorough understanding of group litigation dynamics. His advocacy skills are outstanding, presenting compelling arguments and achieving favourable outcomes in group litigation.

    Group LitigationUK Bar
  • James is a hugely good practitioner, clever and hard-working.

    Group LitigationUK Bar
  • James Williams' authoritative but respectful and considered manner in the Employment Tribunal is reassuring.

    EmploymentUK Bar
  • James has strong experience in employment matters, presenting effective legal arguments and advocacy on technical points of law.

    EmploymentUK Bar

Ranked Barristers at Henderson Chambers (88)

All Circuits

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