Nissim Massarano advises in all aspects of EU and UK competition law. Nissim advises companies on the merger control aspects of M&A transactions, cartel and abuse of market power investigations, appeals to CMA decisions, the application of foreign investment and national security regimes, UK subsidy control and State aid, market studies and investigations, commercial arrangements, and competition law compliance. Nissim advises clients across a wide range of industries, with a focus on the healthcare, life sciences & chemicals, consumer goods & retail, and energy & infrastructure sectors.
- Advising Tele2 on its unconditional Phase II merger clearance of its combination of Tele2 Netherlands with T-Mobile Netherlands, the Dutch subsidiary of Deutsche Telekom
- Advising a private equity client in relation to allegations of anticompetitive agreements and abuse of dominance of a former subsidiary active in the pharmaceutical sector and subsequent appeals
- A private equity client on successfully defending an investigation in relation to disputed parental liability for an alleged anticompetitive agreement of a former subsidiary active in the pharmaceutical sector
- Advising Mondelēz on the merger control aspects of its acquisition of Chipita
- Advising Sizewell GenCo on the public law aspects of its development and financing of the Sizewell C New Nuclear Project in the UK
- Advising Dye & Durham on the UK CMA's Phase II investigation into its acquisition of TM Group
- Advising a crematoria operator on its engagement with the CMA in the Funerals' Market Study and Investigation
News and client work
Contact details
Career & qualifications
- University of Liverpool (LLB) 2014
- University of Oxford, Mansfield College (BCL) 2015
- Joined Clifford Chance 2016
- Admitted as a solicitor in England & Wales 2018
- King's College London (MA, EU Competition Law) 2021
Awards and citations
- Nissim Massarano is also a rising star in this space and will be a big name in the market in years to come.
Legal 500 UK 2026 – Competition Litigation
Nissim Massarano is extremely smart, deeply versed in competition law, and all over the detail of the most complex case.
Legal 500 UK 2025 – Competition Litigation