Henry Mostyn is a partner based in the London office of Cleary Gottlieb Steen & Hamilton. His practice focuses on EU and UK competition law, including merger control, anticompetitive agreements, and abuse of dominance rules. He has represented clients before the European Commission and the UK Competition and Markets Authority, as well as litigation before the European Courts in Luxembourg and the UK High Court. His particular focus is on the application of the abuse of dominance rules to the technology sector. Mr. Mostyn joined the firm in 2012. In 2011, he completed pupillage at 4 New Square Chambers, Lincoln’s Inn. As an undergraduate he read Mathematics at Pembroke College, Oxford. During 2017, Henry worked at the UK Competition and Markets Authority in the mergers team. He completed the Graduate Diploma in Law at BPP Law School, where he achieved a Commendation. Mr. Mostyn is a member of the Bar in England and Wales. His native language is English.
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On October 12, 2022, the Digital Markets Act (DMA) was published in the Official Journal of the European Union. This is the last step in the almost two-year long journey since the publication of the Commission’s initial proposal in December 2020. [1] The text is the same that was approved by (...)
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In September 2022, the General Court partially annulled the European Commission’s 2018 Google Android decision, which fined Google €4.3 billion for abuses of dominance relating to apps it offers for its Android mobile operating system (“OS”). The Court also found that the Commission’s (...)
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The UK Competition Appeal Tribunal (CAT) on 8 August 2022 set aside a £17.9 million fine against price comparison website Compare The Market, criticising the Competition and Markets Authority’s (CMA) legal and evidential assessment of the case. The CAT found that the CMA’s “anecdotal evidence” (...)
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On 26 July the CMA published an Update Paper in its music and streaming market study (launched 27 January). The Update Paper sets out the CMA’s preliminary findings halfway through its study into how well competition works in music streaming. This comes further to a call from the Department for (...)
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The UK Competition and Markets Authority (CMA) last week fined pharmaceutical companies Pfizer and Flynn £63 million and £6.7 million for engaging in excessive pricing. In the CMA’s view, the companies charged unfairly high prices for Phenytoin capsules, a genericised anti-epilepsy drug, in (...)
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On July 18, the European Council approved the final text of the DMA, marking the final step before the DMA enters into force. This followed the European Parliament approving, on July 5, the final text of the Digital Markets Act (DMA), by 588 votes to 11. The DMA is likely to enter the EU’s (...)
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On July 12, the CMA published its final guidance (the Guidance) accompanying the UK’s block exemption for vertical agreements (VABEO). The VABEO came into force on June 1, replacing the retained EU framework. The Guidance supplements the VABEO for agreements not covered by the block exemption. (...)
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On July 5, 2022, the European Parliament approved the final text of the Digital Markets Act (DMA), by 588 votes to 11, marking the penultimate step before the DMA enters into force. The DMA now needs to be ratified by EU ministers, who will vote on July 18. The DMA is likely to enter the EU’s (...)
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The UK Government has published its response to the consultation on a new regulatory regime for digital markets on May 6, 2022. The regime aims to promote competition in digital markets for the benefit of consumers. It will be targeted at a small number of firms designated with having (...)
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The UK Competition and Markets Authority (the “CMA”) is consulting on its draft guidance (“Draft Guidance”) for its proposed Vertical Agreements Block Exemption Order (“VABEO”). It invites comments by May 5, 2022. The Draft Guidance largely maintains the status quo. There are, however, a number of (...)
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On Thursday, March 25, 2022, the European Parliament and EU Member States reached agreement on the final text of the Digital Markets Act (DMA). The DMA marks a paradigm shift in the regulation of digital markets, giving the European Commission unprecedented powers to regulate leading digital (...)
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On 21 July 2020, the Enterprise Act 2002 (Share of Supply) (Amendment) Order 2020 and the Enterprise Act 2002 (Turnover Test) (Amendment) Order 2020 came into force. Both Orders amend the jurisdictional thresholds for mergers in certain sectors. Under the new rules, the thresholds have been (...)
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On 17 June 2020, the Supreme Court handed down a much anticipated judgment concerning the default multilateral interchange fees (MIFs) set by Mastercard and Visa (together, the Appellants). The case considered appeals relating to three separate damages actions brought by retailers against the (...)
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The COVID-19 pandemic has led to extreme demand and price volatility for certain products, as well as fluctuations in firms’ costs. As firms struggle to manage these changes, agencies are aggressively seeking to show they are preventing consumer exploitation—for example, as a result of (...)
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This article has been nominated for the 2016 Antitrust Writing Awards. Click here to learn more about the Antitrust Writing Awards. I. Introduction This e-Competitions Special Issue collects articles on competition law developments relating to the Internet at national and EU levels, as (...)
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This series of articles presents different points of view about the priorities of the newly established Commission on competition policy in Europe in the aftermath of the decision prohibiting the Siemens/Alstom merger and of the manifesto published by French and German governments. These (...)
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