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Mark Steenson

Counsel

Mark advises on UK and EU competition law, including merger control, antitrust and subsidy control, as well as foreign investment rules.
His work includes advising with regard to multi-jurisdictional merger and foreign investment processes, cartel investigations, market investigations, subsidy control and State aid notifications, and general antitrust compliance. Mark has also worked on litigation matters in both the UK Competition Appeal Tribunal and the European Courts. Mark has also undertaken a secondment in the Phase 1 mergers division of the UK CMA.

Experience

Representative matters

A large international air carrier in proceedings before the European Courts relating to the European Commission's Airfreight cartel proceedings.

Celanese Corp in respect of global merger clearance for Nutrinova, a food ingredients joint venture with Mitsui.

Agratas Limited (a subsidiary of Tata Sons) on their plans to establish a global battery cell gigafactory in the UK with a capacity to produce 40 GW of cells annually.

Lanxess on its $1.075 billion acquisition of Emerald Kalama Chemical.

Qualifications

Admissions

Solicitor, England & Wales, 2012

Academic

LL.B, Law with Advanced Studies (2.1), University College London, 2009

Legal Practice Course (Distinction), BPP Law School, 2010

Postgraduate Diploma, EU Competition Law (Merit), King’s College University of London, 2015

Disclaimer
A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.