Portrait of Simona Castellini

Simona Castellini : Senior Consultant

Simona is a member of Oxera’s Competition and Analytics teams. She has advised clients in cases involving horizontal and vertical agreements, abuse of dominance (including in the context of private litigation), mergers, regulatory appeals, and market investigations by the UK Competition and Markets Authority (CMA), the Italian competition authority (ICA) and other competition and regulatory authorities in Europe. Simona is also highly experienced in applying quantitative techniques for analysing efficiency arguments in regulatory and competition settings. She has worked on these issues across a broad range of sectors including financial services, digital, energy, and retail.

Simona speaks English, Italian, and French.

Tel: +44 (0) 20 7776 6689

Simona's specialisms include:

professional experience

  • Advice to a manufacturer in the context of an investigation by the ICA into an alleged breach of Article 102 (2022–)

  • Advice to a large digital platform on ongoing competition and regulatory investigations (2021–)

  • Advice to VetPartners during the CMA investigation of its acquisition of Goddard (2021–)

  • Advice to an airline on a number of abuse of dominance cases brought by online travel agencies in the Irish and UK High Courts (2021–)

  • Advising comparethemarket.com in the context of the CMA’s investigation into its use of most-favoured-nation clauses in home insurance and the appeal process to the CAT (2019–)

  • Advice to Coop in the context of a merger in the grocery sector (2021)


  • MSc Economic and Social Sciences, Bocconi University, Milan, Italy

  • BA International Economics, University of Padua, Padua, Italy

Latest Insights:  Simona Castellini

10 minute read
Most-favoured-nation clauses (MFNs) remain a hot topic in competition policy. The direction of travel has generally been one-way, with the UK and European vertical block exemption regimes designating wide MFNs…

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