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Competition law [2026] CAT 39

Commercial and Interregional Card Claims I Limited ("CICC I") v Mastercard Incorporated & Others

Commercial and Interregional Card Claims I Limited ("CICC I") v Mastercard Incorporated & Others [2026] CAT 39 (29 April 2026)

The Competition Appeals Tribunal found Mastercard’s interchange fee arrangements breached UK competition law and certified collective proceedings for merchants and consumers.

  • Interchange fees
  • Collective proceedings
  • Market abuse
  • Competition-law
  • Interchange-fees
  • Collective-proceedings
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Competition law [2024] CAT 72

Clare Mary Joan Spottiswoode CBE v Airwave Solutions Ltd, Motorola Solutions UK Ltd & Motorola Solutions, Inc

Clare Mary Joan Spottiswoode CBE v Airwave Solutions Ltd, Motorola Solutions UK Ltd & Motorola Solutions, Inc [2024] CAT 72 (10 December 2024)

The Competition Appeal Tribunal dismissed an application alleging abuse of dominant position, finding insufficient evidence of a competition law breach.

  • Market abuse
  • Dominant position
  • Remedies
  • Competition-law
  • Abuse-of-dominant-position
  • Competition-appeal-tribunal
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Competition law [2024] CAT 53

Allergan plc v Competition and Markets Authority

Allergan plc v Competition and Markets Authority [2024] CAT 53 (05 August 2024)

The Competition Appeal Tribunal dismissed Allergan plc’s appeal against the Competition and Markets Authority, holding the enforcement action was lawful and procedurally fair.

  • Market abuse
  • Regulatory enforcement
  • Competition-law
  • Market-abuse
  • Regulatory-enforcement
  • Appeal-dismissed
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Competition law [2024] CAT 29

Allergan plc v Competition and Markets Authority

Allergan plc v Competition and Markets Authority [2024] CAT 29 (29 April 2024)

The Competition Appeal Tribunal dismissed Allergan plc’s appeal against a CMA decision, finding the regulatory process lawful and procedurally fair.

  • Market abuse
  • Regulatory decision
  • Appeal procedure
  • Competition-law
  • Appeal-procedure
  • Regulatory-decision
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Competition law [2023] CAT 58

Commercial and Interregional Card Claims I Ltd ("CICC I") v Mastercard Incorporated & Ors

Commercial and Interregional Card Claims I Ltd ("CICC I") v Mastercard Incorporated & Ors [2023] CAT 58 (02 October 2023)

The Competition Appeal Tribunal refused certification of collective proceedings brought by Commercial and Interregional Card Claims I Ltd against Mastercard and others.

  • Interchange fees
  • Collective proceedings
  • Market abuse
  • Competition-law
  • Collective-proceedings
  • Interchange-fees
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Competition law [2021] CAT 27

Westover Group Limited & Others v Mastercard Inc. & Others

Westover Group Limited & Others v Mastercard Inc. & Others [2021] CAT 27 (30 July 2021)

The Tribunal certified collective proceedings against Mastercard, finding a prima facie case that its interchange fees may have been anti-competitive.

  • Interchange fees
  • Collective proceedings
  • Market abuse
  • Competition-law
  • Interchange-fees
  • Collective-proceedings
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Competition law [2021] CAT 5

Lexon (UK) Limited v Competition and Markets Authority

Lexon (UK) Limited v Competition and Markets Authority [2021] CAT 5 (25 February 2021)

The Tribunal dismissed Lexon (UK) Limited’s appeal against a £1.98 million penalty imposed by the Competition and Markets Authority for anti-competitive conduct.

  • Penalty appeal
  • Market abuse
  • Cartel investigation
  • Competition-law
  • Penalty-appeal
  • Anti-competitive-conduct
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Competition law [2019] CAT 19

Royal Mail plc v Office of Communications

Royal Mail plc v Office of Communications [2019] CAT 19 (11 July 2019)

The Competition Appeal Tribunal dismissed Royal Mail plc’s appeal against Ofcom, upholding the regulator’s assessment of Royal Mail’s conduct in the postal market.

  • Market abuse
  • Dominance
  • Regulatory decisions
  • Competition-law
  • Regulatory-law
  • Abuse-of-dominant-position
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United Kingdom decisions are organised by court, judge, legal area and indexed issue so a practitioner can move from a proposition to a citable authority with the surrounding context intact.

Source links and collection timestamps are retained alongside the indexed records.