Oliver Mills

Oliver accepts instructions across all of Chambers’ core areas of practice, including employment, public law and human rights, and data protection matters. He acts in, and advises on, the following matters in particular:

  • Statutory employment law claims, including complex discrimination and whistleblowing claims. Oliver has a particular interest in claims involving disability discrimination and discrimination on the grounds of religion or belief.
  • Data protection claims, including proceedings alleging breach of the UK GDPR and/or the Data Protection Act 2018.

Prior to coming to the Bar, Oliver was the Judicial Assistant to the Senior President of Tribunals in the Court of Appeal and taught law at the London School of Economics and Political Science. He has a first-class degree in Jurisprudence and a Distinction on the BCL from the University of Oxford.



Oliver accepts instructions across the full range of statutory and commercial employment law matters.

Oliver is regularly instructed, by both claimants and respondents, to appear in the Employment Tribunal, in complex cases involving claims of discrimination, whistleblowing, unfair dismissal and equal pay. Oliver is often instructed to advise from an early stage of proceedings and is experienced in dealing with the full range of substantive and procedural issues that can arise during the preliminary stages of Tribunal litigation.  His recent experience includes:

  • Acting for a claimant in an age discrimination claim that settled for a significant sum shortly before trial.
  • Acting for a respondent, a large international charity, in race discrimination and unfair dismissal proceedings.
  • Acting for multiple claimants in claims involving claims of antisemitism that settled for significant sums.
  • Acting for a respondent, an international professional services company listed on the London Stock Exchange, in a complex whistleblowing claim.
  • Assisting with a high profile and complex equal pay claim brought against a large supermarket chain.
  • Acting for a successful claimant in a case concerning what pay a Chief Officer of a local authority was entitled to when suspended and then subsequently signed off work sick. This case had implications for all local authorities employing Chief Officer’s under the terms agreed by the Joint Negotiating Committee for Chief Officers of Local Authorities.
  • Acting for a respondent, a large international charity, in race discrimination and unfair dismissal proceedings.
  • Acting for a respondent, one of the big four accounting firms, in disability discrimination and unfair dismissal proceedings.
  • Acting for a claimant (led by James Goudie KC) in the Employment Appeals Tribunal on a procedural point relating to the extension of time for presenting an appeal.
  • Acting for a respondent, a police force, in a complex claim concerning perceived disability discrimination.

Oliver is also instructed in High Court proceedings and has experience assisting with commercial employment law litigation, including disputes concerning team moves, breach of confidence and restrictive covenants.

Oliver is a contributor to Tolley’s Employment Handbook.

Public Law, Human Rights

Oliver advises and acts for individuals, non-governmental organisations, and local and central government in all aspects of public law, both led and unled.

Recent experience includes:

  • Advising central government departments on various matters, both led and unled.
  • Advising a non-governmental organisation on the human rights implications of a Bill currently before Parliament, and its potential amendments.
  • Acting for the Secretary of State for Business and Trade (led by Daniel Stilitz KC and Claire Darwin KC) in R (Unison) and others v Secretary of State for Business and Trade.

Oliver also has a particular interest in human rights litigation in Southern Africa. He does pro bono work for the Southern African Litigation Centre and has recently been involved in a successful appeal to the Supreme Court of Eswatini challenging the decision of the Registrar of Companies to refuse to register an LGBTI advocacy organisation.

Information and Data Protection

Oliver is regularly instructed in information and data protection matters, in particular, advisory work and litigation under the UK GDPR and the Data Protection Act 2018.

Recent experience includes:

  • Kuzi-Orizu v Lowell Portfolio 1 Limited and Equifax Limited – acted for Equifax Limited in a claim concerning the accuracy of the data on the claimant’s credit report. The claimant’s claim was struck out, certified as totally without merit and Equifax Limited was awarded its costs as the claimant was found to have acted unreasonably.
  • Knight v TDX Group Limited – acted for the successful defendant in a claim concerning the claimant’s data subject access request. The defendant was awarded its costs as the claimant was found to have acted unreasonably.
  • Dunlop v Information Commissioner and Kirklees Metropolitan Council – acted for the successful local authority defending a decision to withhold information under the Environmental Information Regulations 2004.
  • Acting for the Information Commissioner in a number of information and data protection cases.

Public Procurement

Oliver accepts instructions from economic operators and authorities. He was instructed by the Secretary of State for Justice (led by Rupert Paines) in Boxxe Limited v The Secretary of State for Justice [2023] EWHC 533 (TCC).


University of Oxford, BCL, Distinction

University of Oxford, BA Jurisprudence, First Class


Queen Mother Scholarship, Middle Temple

Harmsworth Entrance Exhibition, Middle Temple

Peter Carter Prize: Proxime Accessit, Wadham College Law Society

College prizes for performance in Final Honours School and BCL Examinations, Wadham College


Regulatory Information

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Professional title: Barrister

Full name (as registered with Bar Standards Board of England and Wales): Oliver Mills

VAT Number:

Legal Status: Sole Practitioner

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