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England - London • Dispute resolution
3

Group litigation: Claimant

Stephenson Harwood

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With a continued focus on the private enforcement and group litigation space, Stephenson Harwood represents a growing roster of clients in interchange and damages claims, including cartel damages actions. Genevieve Quierin heads the team. With a strong background in competition private enforcement actions, she leads on the MIF claims against Visa and Mastercard. Trudy Feaster-Gee joined the team in October 2023, bolstering the firm’s competition offering. Feaster-Fee also plays a key role in the MIF claims alongside Quierin. Adam Polonsky, Chris Pettett and Marcus Watkinson are other names to note.
Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Genevieve Quierin excels in Stephenson Harwood's Group Litigation (claimant) practice through her remarkable leadership and legal acumen, particularly in orchestrating complex, multi-party litigation. Her proactive communication style ensures that all parties are well-informed and aligned, which is essential in group litigation contexts where coordination is key. Genevieve's strategic thinking and ability to anticipate legal challenges allow her to navigate cases effectively, setting her apart from competitors who may not foresee such complexities. These qualities, coupled with her commitment to achieving favorable outcomes for all claimants, make her an invaluable leader in this specialized legal field.’

  • ‘A very close-knit working team who are always happy to help and provide legal advice, they are on hand at all times and will make time to speak to you.’

Key clients

  • Marks and Spencer PLC
  • bet365

Work highlights

Representing over 1,800 corporate claimants in group claims brought against Mastercard and Visa, totalling approximately £1.5bn.
Acting for seven UK supermarket groups, that account for 45% of the UK grocery market (Asda, Aldi, Co-op, Iceland, M&S, Morrisons and Ocado), in their claims for damages against seven leading farmed Atlantic salmon producers.