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CompLaw: Financial Services
September 2025
London, United Kingdom

Olivia Hagger
Head of Antitrust at London Stock Exchange Group
Speaker

Profile

As Head of Antitrust at London Stock Exchange Group, Olivia has group-wide responsibility for providing competition law advice relating to a wide range of commercial matters. Olivia supports the group’s strategic initiatives by advising senior stakeholders on competition law implications for commercial policy and transactions. Olivia also manages competition and foreign investment approvals for group mergers and acquisitions, such as the recent $27 billion acquisition of Refinitiv. Olivia is responsible for competition compliance, including designing and delivering the group’s competition policy and compliance training. Olivia also manages any antitrust complaints processes or litigation should they arise.

Olivia joined LSEG in 2018, after 13 years at Freshfields Bruckhaus Deringer, where she was recognised in Who’s Who Legal’s Competition Future Leaders.

Agenda Sessions

  • Merger Control & FDI: Is Tougher Enforcement Frustrating M&A Activity?

    14:10