
The practice at Mishcon de Reya LLP is commended for its ‘unique offering of innovation and agility in the group litigation space’, and is also noted for having ’real expertise in the field of group actions; particularly competition claims and data breach claims’. Richard Leedham, ‘one of the most experienced and commercially astute group litigators’, leads the practice with competition litigation specialist Sarah Houghton. Ben Lasserson is key to the practice, along with Shazia Yamin who is ’highly able and very effective at winning cases’. Other key names to note include Pedro Martins, Tomas Mousinho, and Alexander Rhodes.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- ‘A unique offering of innovation and agility in the group litigation space- but combined with rock solid professionalism and core values.’
- ‘Richard Leedham - inspirational leadership qualities. Tom Roberts - fiercely intelligence and client communication. Pedro Martins and Tomas Mousinho bring another dimension with their South American credentials and innovative case management.’
Key clients
- Various investors in the shares of Indivior plc and Reckitt Benckiser Group plc
- Justin Le Patourel
Work highlights
Acting for over 300 investors in the shares of Indivior plc and Reckitt Benckiser Group plc in a s.90/90A FSMA claim against the two companies for losses caused by alleged misconduct in relation to the marketing in the US of a drug known as Suboxone. Matter value is in the hundreds of millions GBP.
Lawyers
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head
Richard Leedham; Sarah Houghton
Other key lawyers
Ben Lasserson; Shazia Yamin; Pedro Martins; Tomas Mousinho; Alexander Rhodes
