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Sousan is a commercial litigator focusing on financial services disputes and securities class actions.

Sousan is a senior associate in our banking litigation practice and UK class actions practice. 

Sousan helps clients handle banking and financial services disputes, primarily advising banking clients on a variety of complex international and domestic claims, and shareholder group claims. Sousan has experience advising in connection with investigations, supporting clients through internal investigations and regulatory investigations.  

Sousan also understands in-house legal operations, having been seconded to three investment banks. During that time, she has worked on national and cross-border litigation as well as internal and regulatory investigations and developed her understanding of the priorities of and challenges facing her clients.


Sousan read English Literature at Durham University before completing the GDL and the LPC. 

Sousan trained at Herbert Smith Freehills LLP before qualifying into the banking litigation and contentious regulatory team in March 2014. Sousan has spent time on secondment to UBS, Goldman Sachs and Deutsche Bank.

Experience & expertise

Selected matters

  • Royal Sun Alliance in defending a claim brought under section 90A FSMA
  • RBS Group in defending actions brought by shareholder and investor groups in connection with the Group's 2008 Rights Issue
  • successfully defending UBS in Decura and others v UBS AG, London Branch proceedings relating to an alleged termination event under a joint venture agreement
  • a global investment bank in relation to cross-border investigations and remediation in respect of foreign exchange (FX) trading.