• “Ian Thomas is a well-regarded junior acting for companies in food law matters. He is highly adept at providing regulatory compliance advice as well as representing clients in court.”

    Chambers UK Bar, 2025
  • “Ian Thomas is a highly capable barrister and noted food law specialist, known for representing individuals, local and national companies and government bodies in food safety and trading standards cases.”

    Chambers UK Bar, 2025
  • "An excellent advocate, who is able to advise the client on the best legal route, whilst recognising the commercial realities of the client's business."

    Chambers UK Bar, 2023
  • Shortlisted - Group Litigation and Consumer Junior of the Year

    Legal 500 Bar Awards
  • "A very experienced and able operator…Very knowledgeable in food safety and hygiene."

    Legal 500, 2022
  • "A true food safety expert, he has a grasp of pitching his in-depth, technical knowledge in the most appropriate commercial context."

    Legal 500, 2020
  • Ian is a specialist regulatory barrister. He is highly regarded for his work in food and consumer products regulation, including labelling claims (for example nutrition, health and environmental), safety and recalls. Ian is also experienced in health and safety law, inquests and public inquiries.

    Ian’s practice is divided between providing non-contentious compliance and regulatory advice, providing guidance and assistance in connection with investigations and enforcement action, and representing clients in courts and tribunals.

    A substantial proportion of Ian’s work involves complex and technical points of regulatory law and evaluating commercial, legal and regulatory risk for businesses (multinationals, SMEs and individuals) and consumers.

    Ian’s work, particularly in respect of claims, also involves advising on advertising and marketing rules and he is experienced in the requirements of the Advertising Standards Authority Codes.

    Ian is ranked in the legal directories in Life Sciences Regulatory and Consumer Law and was nominated by Legal 500 in the category of Consumer Junior of the year (2022).

    He works with lawyers and businesses based in the UK, Republic of Ireland, Europe and globally.

    Ian is a Visiting Professor at Ulster University.

    He accepts instructions under the Direct Access scheme.

    Ian is a practising solicitor in the Republic of Ireland.

  • "A highly capable barrister and noted food law specialist, known for representing individuals, local and national companies and government bodies in food safety and trading standards cases".

    Chambers UK Bar, 2018
  • "A very experienced and able operator...Very knowledgeable in food safety and hygiene."

    Chambers UK Bar, 2018
  • "He is extremely user-friendly and makes advocacy look easy."

    Legal 500, 2017
  • “He has a wealth of knowledge and experience.”

    Legal 500, 2016
  • "Extremely thorough, pragmatic and sensitive to the client’s needs, both financial and legal."

    Legal 500, 2015
    • Food

      As a very experienced food lawyer, Ian provides regulatory and compliance advice, and represents clients in courts and tribunals in relation to a wide range of food law matters including: food safety and hygiene, animal welfare (including at the time of killing), food information, health and nutrition claims, food supplements, borderline products (e.g. food/cosmetics/medicinal products), traceability, product withdrawals and recalls, official controls and enforcement powers.

      Courts and Tribunals

      Representing a very large multinational food business in an appeal to the magistrates’ court against the refusal to permit the importation of a Food for Special Medical Purposes.

      Defended an individual food business operator in a food safety prosecution where the case was sent to the crown court on grounds of seriousness.

      Defended a food business in a prosecution based on a failure to implement HACCP where the food was subject of a significant food recall.

      Challenging the service of a Hygiene Emergency Prohibition Notice.

      Defended a multinational fast-food business in a food hygiene prosecution involving the presence of rodent activity and food supplied to a consumer.

      Defended a SME food business in a food hygiene prosecution, including legal argument on time limits and judicial review proceedings.

      Defended a specialist food business in a prosecution for placing unsafe food on the market (food containing undeclared milk supplied to primary schools).

      Advised a food business in connection with a criminal investigation into placing unsafe food on the market (undeclared milk). Assisted the business make representations to the prosecuting authority. No prosecution was commenced.

      Defending a SME food business in a food hygiene prosecution including legal arguments regarding the identity of the responsible food business operator.

      Defending a food business operator in a food hygiene prosecution in the crown court.

      Representing a slaughterhouse appealing against the service of a Welfare Enforcement Notice under the Welfare of Animals at the Time of Slaughter Regulations (hearings in the First-tier Tribunal and the Upper Tribunal)

      Advising

      A food service provider in the context of a prosecution where legal submissions were made on the grounds of breaches of PACE and other procedural issues. The prosecution withdrew the case.

      On the addition of vitamins and minerals to alcohol products.

      An international fast-food business on national food law compliance.

      A drinks manufacturer on novel food ingredients.

      On the use of ‘probiotic’ in the context of food information and health claims.

      On animal welfare issues and an assured welfare scheme.

      A local authority on a possible food recall.

      A director in respect of an alleged large-scale fraud involving the mislabelling of meat. No prosecution was commenced.

      On nutrition and health claims, particularly in the context of advising on the legal and regulatory requirements for food supplements.

      A charity in relation to a food allergen issue where an employee suffered an anaphylactic reaction and was hospitalised.

      Regarding the detention of imported product due to alleged non-compliance with food of animal origin legislation.

      A food service provider in respect of food safety management systems, allergens and Primary Authority.

      In connection with a recall of a liqueur containing undeclared milk.

      About the safety of vacuum-packed product, the presence of C. Botulinum and obligations to recall the product and its recall obligations.

      In connection with using the description ‘natural’ on pack (including the application of the ASA Codes).

      An EU food business on its UK (GB) labelling obligations in respect of ‘ready to eat’ foodstuffs, including health and environmental claims.

      A multi-national food business in respect of the claim ‘suitable for vegetarians’ and its recall obligations.

      An EU food business on various aspects of the Bread and Flour Regulations.

      An EU food business in respect of the labelling and composition of food supplements and nutrition and health claims.

      On the appropriate food business operator in the context of a criminal investigation.

      In respect of enforcement action against a local authority operated food business.

      On matters relating to raw pet food, safety and enforcement.

    • Consumer and Regulatory

      Ian is very experienced in providing advice in respect of the regulation and compliance of non-food consumer products. This includes labelling and safety requirements.

      Advising

      On the general products safety regulations and product-specific requirements (e.g. radio equipment).

      On extended producer responsibilities for packaging and packaging waste.

      On national food packaging law.

      An EU business on the UK legal and regulatory requirements applicable to ‘vape’ products.

      An EU business on the legal and regulatory requirements applicable to cosmetic products (including changes to the use of allergen fragrances).

      An EU business on the legal and regulatory requirements applicable to detergents.

      A business on the provisions applicable to umbrella labelling (in the context of medicinal products and food supplements).

      On the use of the descriptor ‘vegan leather’.

    • Health and Safety

      Defending a very large organisation in a prosecution for breach of the asbestos regulations.

      Defending an organisation in criminal proceedings relating to the absence of risk assessments, work at height and forklift trucks.

      Advising an international fast-food business on national health and safety and fire safety obligations.

    • Inquest and Inquiries

      Acting as sole counsel for a corporate core participant in the long-running Public Inquiry into the fire at Grenfell Tower.

      Advising a corporate organisation on the provision of written evidence to the Covid-19 public inquiry.

      Representing the enforcing authority at an inquest involving a drowning at a hotel swimming pool.

      Representing the enforcing authority at an inquest concerning a fire at a caravan site.

      Representing a structural engineer at an inquest following a wall collapse.

      Representing a local authority at inquests where deaths occurred at local authority supervised residential accommodation.

    • Financial services and consumer finance

      Ian has experience conducting trials and interlocutory hearings in motor finance claims involving secret and half-secret commissions and unfair relationships under section 140A of the Consumer Credit Act 1974.

    • Licensing

      Ian has experience of dealing with matters relating to the alcohol legislation, taxis and private hire.

    • Events
    • News
    • External Events (e.g. conferences/presentations)

      Ian regularly speaks at conferences and seminars.

      Presenting at CTSI annual conferences.

      Presenting at annual food labelling conferences (The Legal Training Consultancy).

      He presents annual food law lectures at Ulster University and at the Technological University of Dublin.

    • Education, Qualifications and Memberships

      LL.B (Hons) Wolverhampton University

      Called by Gray’s Inn 1993

      Law Society of Ireland (admitted 2006)

      Visiting Professor, Ulster University

      Elected Fellow, Society of Food Hygiene and Technology

      Member, Food Law Group

      Country Correspondent (Ireland) for the European Food and Feed Law Review

      Member, European Food Law Association

      Affiliate Member, Institution of Occupational Safety and Health

    • Publications
      • A Practical Guide to the Law Relating to Food, Third Edition (Law Brief Publishing).
      • Covid-19 and the Law Relating to Food in the UK and Republic of Ireland (Law Brief Publishing).
      • Co-author of the health and safety chapter of Consumer and Trading Standards: Law and Practice 13th edition (the Pink Book).
      • Writes regularly for the European Food and Feed Law Review.

    VAT number: 176479852