Michael Armitage

Call: 2011

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Contact Michael Armitage

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    Education

    BA (Hons), Philosophy, Politics and Economics (Oxford) (1st Class); Graduate Diploma in Law, City University (Distinction)

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    Introduction

    a very impressive advocate” – Chambers UK, 2025

    Michael is an experienced senior junior barrister. He specialises primarily in competition law, public law and sports law, but he also has expertise across a range of other fields including public procurement, information law and general commercial litigation and arbitration. He regularly acts unled (often against silks) and has substantial experience conducting oral advocacy and cross-examination in high-profile, high-value trials.  He was instructed in two of the Lawyer magazine’s Top 20 cases for 2025 (Kent v Apple and McLaren v MOL & Others). His cross-examination of a leading global technology firm’s Chief Financial Officer at a recent trial was reported in the Financial Times.

    The legal directories describe Michael as a “very impressive”, “well prepared”, “cerebral”, “super-bright” and “absolutely excellent” advocate who is “very collegiate”, “a master of the detail”, “good at bringing across the recent case law to the tribunal”, a “real team player”, “very calm and great with the clients” and “clearly valued by the silks he works with”. Clients praise his “excellent tactical nous and exceptional drafting” and his ability to “turn round submissions and advice quickly and well”.

    Michael prides himself on the diversity of his practice. He acts for a range of claimants and defendants and is just as comfortable advising multi-national businesses on competition law issues as he is helping secure urgent interim relief for individuals in receipt of legal aid.

    Michael is Standing Counsel to the Competition and Markets Authority, and a member of the Attorney- General’s “B-Panel” of counsel. He is direct access qualified and accepts pro bono instructions in suitable cases.

    Before qualifying as a barrister, Michael read Philosophy, Politics and Economics at Balliol College, Oxford, where he received the top mark in the University in Philosophy finals, and the 4th highest overall mark in the University. He then worked as a parliamentary researcher and caseworker in the House of Commons before completing his GDL (with Distinction) and BPTC (Outstanding, ranked 5th in year) at City, University of London.

    • News
    • Public law and judicial review

      Michael undertakes a broad range of public law and judicial review work ranging from major human rights and discrimination cases to challenges to regulatory decisions in the commercial sphere. He also has a specialist community care practice, often acting for vulnerable, legally-aided claimants on extremely urgent applications. The public law legal directories describe him as “a very impressive advocate” who is “extremely well prepared”; he “runs challenging points and does it very well”.

      Michael regularly appears unled, for both claimants and defendants, in the Administrative Court and in a range of specialist tribunals. He also frequently acts as junior counsel in claims raising major points of principle, both at first instance and on appeal. He has appeared in four public law cases in the Supreme Court: twice for claimants, and twice for defendants. As Standing Counsel to the Competition and Markets Authority, Michael routinely acts in regulatory appeals decided on judicial review grounds.

      Cases

      The following is an illustrative list of Michael’s reported public law cases:

      • R (VIP Communications Ltd) v Secretary of State for the Home Department [2023] UKSC 10: acting (led by Daniel Beard KC) for the Secretary of State in a successful appeal concerning the scope of the government’s powers to regulate telecommunications providers on national security grounds.
      • R (Liberty) v Secretary of State for the Home Department [2023] EWCA Civ 926: acting (as part of a counsel team led by James Eadie KC) for the Home Office in a high-profile judicial review challenge to the Investigatory Powers Act 2016.
      • Cerelia Group Holding SAS v Competition and Markets Authority [2023] CAT 54: acting (led by Robert Palmer KC) for the CMA in its successful defence of a regulatory judicial review in respect of the CMA’s decision to block a merger.
      • Hussein v Secretary of State for the Home Department: acting (led by Robert Palmer KC) in a Supreme Court appeal concerning powers of removal under the Immigration (European Economic Area) Regulations 2006.
      • R (AK) v LB Islington & another [2021] EWHC 301: acting (unled) for the successful claimant in a novel judicial review claim concerning the provision of “after-care” services under s. 117 of the Mental Health Act 1983 to a child following her discharge from a psychiatric unit.
      • R (J P (a child)) v NHS Croydon Clinical Commissioning [2020] EWHC 1470 (Admin): acting (unled; leading Ciar McAndrew) for the claimant in a successful judicial review of a decision to reduce a care package for a young child suffering from a life-limiting brain tumour.
      • R (Miller) v College of Policing [2021] EWCA Civ 1926: acting (led by Ian Wise KC) for the successful appellant in a case concerning the parameters of the Article 10 right to freedom of expression in the social media.
      • R (Z) v Agudas Israel Housing Association Limited & LB Hackney [2020] UKSC 40: acting (led by Ian Wise KC) for the Claimants, from first instance up to the Supreme Court, in the leading case on the scope of ‘positive action’ under the Equality Act 2010.
      • R (Cotter) v NICE [2020] EWCA Civ 1037: acting (led Ian Wise KC) in a judicial review of a decision by NICE relating to the approval for NHS use of a drug for the treatment of a rare and debilitating condition (PKU).
      • R (RD & others) v Worcestershire CC [2019] EWHC 449 (Admin): acting (led by Jenni Richards KC) for the successful claimants in a legitimate expectations challenge to a local authority’s decision to terminate the provision of ‘portage’ services for disabled children.
      • R (DA and Others) v Secretary of State for Work and Pensions [2019] UKSC 21: acting as junior counsel to Ian Wise KC and Caoilfhionn Gallagher KC) for the Claimants in a high-profile Article 14 challenge to the government’s “benefit cap” legislation – see Supreme Court judgment reported at [2019] 1 WLR 3289.
      • R (AA) v Secretary of State for the Home Department: acting for the Claimant in a landmark unlawful detention claim raising novel issues concerning the Secretary of State’s powers to detain children under the Immigration Act 1971. Michael won the substantive hearing on liability (appearing unled and against a silk): see [2016] EWHC 1453 (Admin). Michael was subsequently led by Ian Wise KC in the Court of Appeal, again successfully: see [2017] EWCA Civ 138.
      • E v London Borough of Islington [2017] EWHC 1440 (Admin): acting (led by Ian Wise KC) for the Claimant in the first ever successful damages claim based on a contravention of the right to education under Article 2 Protocol 1 of the ECHR.
    • Competition law

      Michael’s competition law practice covers litigation and advisory work across the full spectrum of competition law. He has substantial advocacy experience (including cross-examination) in the Competition Appeal Tribunal. The legal directories, in which he has for many years been ranked as a leading junior in competition law, describe Michael as “very astute and has considerable experience, super-bright and amongst the best analytical juniorshaving excellent tactical nous and exceptional drafting”, excellent to work with.

      Michael is instructed on a number of the most of high-profile competition claims in this jurisdiction. As well as acting for both claimants and defendants in private competition law disputes, he has served as Standing Counsel to the Competition and Markets Authority since 2021.

      Michael’s competition law practice divides into (i) collective proceedings, (ii) private competition law claims and (ii) regulatory appeals.

      Cases

      Collective proceedings

      Michael has an extremely busy collective proceedings practice: a GCR analysis in April 2025 found that Michael “leads his contemporaries” as the busiest barrister in this field, having advised on 10 of the 24 collective claims filed in the Competition Appeal Tribunal since the collective proceedings regime came into force in October 2015. Michael acts for both class representatives and defendants, and he was the only barrister to be instructed in each of the first three collective claims to come to trial (Le Patourel v BT; Gutmann (Bounday Fares); Kent v Apple). In addition to those cases, Michael has acted in a range of other collective claims including Gibson v Pride Mobility Scooters, Trucks (RHA / UKTC), Coll v Google, McLaren v MOL & Others, Which? v Qualcomm Inc, Boyle v Govia Thameslink and Spottiswoode v NKT & Others.

      Michael appeared in each of the first three collective competition law trials before the CAT (the only barrister): Le Pat, Gutmann, Kent.

      Private competition law claims

      Michael also has a busy private competition law practice, covering both follow-on and stand-alone claims for both claimants and defendants (including the Air Cargo, Trucks and Power Cables proceedings). Notable current and recent instructions include:

      • Lenzing AG & Others v Westlake Corp & Others: Michael is currently acting (unled, leading Hugh Whelan) for the claimants in stand-alone cartel damages claims concerning the alleged manipulation of pricing indices for caustic soda.
      • ValueLicensing v Microsoft: acting for the Defendant in abuse of dominance claims concerning the bulk resale of software licences.
      • Churchill Gowns v Ede & Ravenscroft [2022] CAT 34: acting for the Defendants (led by Conall Patton KC) in their successful defence of stand-alone Chapter I / Chapter II claims concerning the supply of student gowns.

      Regulatory appeals

      In his role as Standing Counsel to the Competition and Markets Authority, Michael has been instructed in a number of major regulatory appeals, including both antitrust cases and merger appeals. Notable current and recent instructions include the Hydrocortisone Appeals (pending before the Court of Appeal), Cerelia v CMA [2023] CAT 54; and BGL v CMA [2022] CAT 36.

    • Sports law

      Michael also a niche sports law practice, in which he combines his substantial experience in public law, competition law and general commercial litigation with his passion for a range of different sports. His sports law practice covers disciplinary proceedings, arbitrations and civil court proceedings.

      Cases

      Selected instructions include:

      • Confidentially advising a number of sports teams on potential competition law claims against sports governing bodies.
        • Acting (with Paul Harris KC) for nine “Barbarians” players in high-profile disciplinary proceedings concerning alleged contraventions of COVID-19
        • Acting for various players and officials in gambling disciplinary cases.
      • Acting as sole counsel for a former employee of a major football club in High Court proceedings raising issues of unlawful means conspiracy and
      • Acting as sole counsel for an Italian rugby player in disciplinary proceedings concerning alleged misconduct during a “6 Nations” match;
    • Other practice areas

      In addition to his primary practice areas, Michael also has significant experience in public procurement, information law and general commercial litigation.

      Cases

      Public procurement

      • Acting for the Ministry of Defence in a challenge to the procurement process for a major global logistics contract: see MLS (Overseas) Ltd v MoD [2017] EWHC 3389 (TCC). Michael was junior counsel for the MoD in this High Court trial, and conducted the cross-examination of one of the claimant’s key witnesses.
      • Appearing as sole counsel for a domestic abuse charity in a “suspension” hearing in the Mercantile Court.
      • Acting for two central government departments in connection with a long-running damages claim arising from a terminated procurement for “search and rescue” helicopters.

      Information law

      • Acting for the University of Cambridge in successfully resisting disclosure of proprietary information relating to 11+ examination papers.
      • Appearing as sole counsel for a local residents’ association in a two-day  appeal before the First-Tier Tribunal: Royal Borough of Greenwich v ICO and Brownie. The case involved cross- examination of a number of witnesses as well as detailed legal submissions, and resulted in the Tribunal ordering full disclosure of all information requested by Michael’s client. In light of his success in the Greenwich case, Michael was instructed to act for another requester in an appeal involving disclosure of a viability assessment (Perry v ICO and Hackney), in which Michael successfully obtained full disclosure prior to the final hearing.
      • Appearing (as sole counsel) for the Information Commissioner in Worcestershire City Council v ICO, a 3-day hearing involving cross-examination of multiple witnesses.
      • Acting (as junior to Ian Wise KC) in Willow v ICO, in proceedings concerning the Ministry of Justice’s refusal to disclose a manual containing detail of the restraint techniques used on children in detention: [2017] EWCA Civ 1876.
      • Advising HMRC in connection with subject access requests under the Data Protection Act 1998 in relation to high-pro¡le case of “whistle-blowing”.

      Commercial law

      Michael also has a general commercial practice, covering both litigation and advisory work. Recent instructions include acting unled for a ‘start up’ technology company in a private arbitration concerning the distribution of the proceeds of sale of a major asset.

    • What the directories say

      Administrative & Public Law: “Michael is a very impressive advocate. He is extremely well prepared.” – Chambers UK, 2025

      Competition Law: “Michael is very astute and has considerable experience in competition matters. He is cerebral with a very in-depth knowledge of case law.”  Chambers UK and Chambers Global, 2025

      Competition Law: “Mike is very bright and all over the case law. He also readily understands the client’s strategic objectives and factors those into his advice. He is excellent to work with, collaborative and proactive.” – Legal 500, 2025

      Administrative & Public Law: “He is very, very good – he runs challenging points and does it well.” – Chambers UK, 2024

      Community Care: He runs challenging points and does it very well.” “Michael is very good.” – Chambers UK, 2024

      Competition Law: “Michael is excellent to work with, collaborative, and collegiate.” – Chambers UK, 2024

      Administrative Law and Human Rights: “A junior who provides very good, intelligible advice.” – Legal 500, 2024

      Competition Law: “He is super-bright and amongst the best analytical juniors. Michael knows abuse of dominance issues inside-out, also having excellent tactical nous and exceptional drafting.” – Legal 500, 2024

      Administrative & Public Law: “He is absolutely excellent; he gets up to speed very quickly and is very collegiate.” – Chambers UK, 2023

      Community Care: “Michael is an excellent barrister.” “He has an impressive public law practice.” – Chambers UK, 2023

      Competition Law: “A master of the detail and good at bringing across the recent case law to the tribunal. He’s clearly valued by the silks he works with.” – Chambers UK and Chambers Global, 2023

      Administrative Law and Human Rights: “Mike is very collegiate and can turn round submissions and advice quickly and well.” – Legal 500, 2023

      Competition Law – Legal 500, 2023

      Community Care: “Michael is an impressive barrister and is particularly strong in public law.” “Michael is practising in interesting and complex cases.” – Chambers UK, 2022

      Competition Law: “Good at grasping the issues and solving the problems, and focusing on what is important.” “He is a real team player; he is very resourceful and hard-working as well.” – Chambers UK and Chambers Global, 2022

      Competition Law: “Great to work with, user friendly and a master of the detail.” – Legal 500, 2022

      Competition Law: “A very bright barrister, who cuts through to the key issues. He’s been involved in quite a few big cases so his ability to call on that experience is invaluable.” “He was very knowledgeable on the issues, very calm and great with the clients.”Chambers UK and Chambers Global, 2021

      Competition Law: “A strong drafter who is highly regarded by senior QCs.” – Legal 500, 2021

      Competition Law: “His attention to detail is good and his drafting is excellent.” “He is practical and willing to work hard, and is someone who gets on very well with clients.” – Chambers UK and Chambers Global, 2020

    • Professional memberships
      • Administrative Law Bar Association
      • Bar European Group
      • British Association for Sport and Law
      • Competition Law Association
      • Human Rights Lawyers Association
    • Additional information

      Undergraduate

      • BA Philosophy, Politics and Economics, Balliol College, Oxford, First Class Honours
      • Ranked 4th in the University overall, and 1st in Philosophy
      • Gibbs Prize for outstanding performance in Philosophy
      • Fletcher Exhibitioner (Balliol College)
      • Coolidge “Pathfinder” Scholarship (Balliol College) – for independent travel and research in the USA

      Legal

      • Diploma in Law from City University, London (2009-2010), Distinction
      • Bar Professional Training Course, City Law School (2010 – 2011), Outstanding (5th in year), including marks of Outstanding in civil advocacy and cross-examination
      • Prince of Wales Scholarship, Grays Inn
      • Everard ver Heyden Foundation Prize for performance on the BPTC
      • Phoenicia Scholarship, Bar European Group (for attendance at BEG conference in Athens)
    • Education

      BA (Hons), Philosophy, Politics and Economics (Oxford) (1st Class);
      Graduate Diploma in Law, City University (Distinction)

    • Publications

      Co-author (with Jon Turner KC and Anneli Howard KC) of the chapter on ‘Litigating Infringements in National Courts’ in Bellamy & Child (8th edition), European Union Law of Competition

      Co-Author (with Jack Williams) of “Some things money cannot buy – lessons learned from the latest judgment under the UK’s new regime for collective competition law claims: Merricks v Mastercard Inc” (2018) 37(1) Civil Justice Quarterly 48-61

      “The (Fast-Track) Trial of Socrates”, Competition Law Journal (2017, issue 3)

      “Streetmap gets lost in Google abuse of dominance claim” (article for Lexis PSL, 25/2/16)

      “Competition Law, land agreements and the decision in Martin Retail Group Ltd v Crawley Borough Council: an opportunity missed?” – article in the Competition Law Journal (2014, issue 3)

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