Reign Lee

Reign has significant experience advising clients on UK/EU antitrust investigations, market investigations, UK merger control, and distribution agreements, providing strategic advice to clients on engagement with regulators.

• Assisted several clients across a range of industries with conducting multijurisdictional merger control and UK NSIA assessments.
• Assisted a global brand in the context of EU antitrust investigations concerning Big Tech companies.
• Assisted a prominent social networking company in the context of various high-profile market investigations launched by the UK Competition and Markets Authority and the European Commission.
• Assisted a leading digital business in the context of the first-ever Strategic Market Status investigations launched in the UK in 2025 under the UK Digital Markets, Competition and Consumers Act.
• Advised several leading pharmaceutical companies on a broad range of complex distribution issues and collaboration agreements.
• Advised clients on the market impact of proposed transactions in the context of developing new products.

Reign advises on UK and EU digital regulation, helping tech companies, multinational brands, publishers and online platforms navigate complex regulatory requirements, achieve compliance, and manage risk in rapidly evolving digital landscapes. 

• Advised a global e-commerce company on compliance with various requirements under the UK Online Safety Act, including illegal content risk assessments and age verification measures. 
• Assisted a leading digital business in the context of the first-ever Strategic Market Status investigations launched in the UK in 2025 under the UK Digital Markets, Competition and Consumers Act.  
• Advised leading “houses” in the creative industries on compliance with the European Accessibility Act as well as the potential impact on digital rights management. 
• Provided ongoing advice to several high-profile brands and businesses in relation to various aspects of the UK Digital Markets, Competition and Consumers Act, and the interplay between competition and consumer law enforcement under the new rules.

Reign advises global brands and businesses with digital activities on AI governance & accountability, platform responsibilities & antitrust rules, digital service obligations & accessibility requirements, and sector-specific compliance needs.  

• Advised a global e-commerce company on compliance with various requirements under the UK Online Safety Act, including illegal content risk assessments and age verification measures.  
• Assisted a leading digital business in the context of the first-ever Strategic Market Status investigations launched in the UK in 2025 under the UK Digital Markets, Competition and Consumers Act.  
• Advised leading “houses” in the creative industries on compliance with the European Accessibility Act as well as the potential impact on digital rights management.  
• Assisted a prominent social networking company in the context of various high-profile market investigations launched by the European Commission under the Digital Markets Act.  
• Advised a leading sports brand with various esports events and products in development on strategic collaborations and commercial agreements.  

Member of the International Bar Association (IBA) 

 Member of the IBA Human Rights Institute (IBAHRI) 

 Member of the IBA Law Firm Management Committee 

 Member of the Henley Executive Hedge Fund Network 

 Member of the International Institute of Legal Project Management (IILPM) 

 Member of WB Directors (Women on Boards) 

 Advisory Board Member of the Law Firm Marketing Summit (co-founder) 

 Advisory Board Member of the GC Futures Summit 

 Judge for the Women & Diversity in Law Awards