Class Actions & Group Litigation

Find out more

Class actions and mass claims can put your business under pressure across multiple markets at once. We defend global businesses in class actions, collective proceedings, mass arbitrations, and multi-party litigation. One international team. One coordinated strategy.

We start with the full picture. How could individual claims become large-scale exposure? What will claimants do next? How could a decision in one jurisdiction affect proceedings elsewhere?

Where claims cross borders, we connect the strategy across jurisdictions. You see your total exposure, not a series of isolated proceedings.

We look for opportunities to stop claims gaining momentum, challenge aggregation or certification, and narrow claimant groups or disputed issues. We anticipate claimant and funder strategies and look for ways to limit claims spreading across jurisdictions. We weigh resolution against your total exposure. And when claims need to be fought, we're ready.

Scale demands control. We use eDiscovery platforms, AI-assisted tools, and purpose-built client portals to manage data and disclosure efficiently. You get clear oversight of proceedings and costs.

Experience in action

115 Nissan dealerships

Successfully defended 115 dealerships in the U.K. Pan NOx diesel emissions group litigation.

U.S. multinational e-commerce platform

Managing a large portfolio of consumer claims alleging breaches of U.K. data protection law.

Konkola Copper Mines

Acting in environmental group litigation brought by 3,730 Zambian residents and a separate arbitration. The claims raised complex Zambian law and individual liability issues at scale.

Ride-sharing platform

Defending hundreds of worker-status claims across several group proceedings.

UK Hospitality

Acting in the FCA's business interruption insurance test case advancing policyholder claims, determined by the Supreme Court in January 2021.

Japanese multinational gaming company

Assessing potential exposure to proposed GDPR group claims by semi-professional and professional footballers over the processing of their images and career statistics.

Petrol forecourt operator

Acting on damages claims against Visa and Mastercard over interchange fees charged on debit and credit card transactions.

Global vehicle manufacturer

Managing its defense of U.K. multi-party consumer and business-to-business claims involving contract, negligence, consumer regulation, and product liability.

Global healthcare company

Defending 24 claims across more than six jurisdictions concerning an allegedly defective medical device used in open-heart surgery.

Dutch financial services claims

Acting for claim foundations in class actions and test cases against Dexia Bank, and for approximately 40 shareholders and investors in claims against Fortis Bank.

Large pharmaceutical company

Acting in relation to a potential mass damages claim by the Dutch Association of Hospitals concerning an alleged anticompetitive "pay-for-delay" agreement and medicine prices.

Shoulder to shoulder in your breakthrough moments.

Winston Taylor is a transatlantic law firm built for the businesses, people, and markets driving capital and innovation.

One team. Across borders.

Our wider team

Katie Chandler

Partner

+44 20 7300 4163

katie.chandler @winstontaylor.com

Learn more

Troy Yoshino

Partner

+1(415) 519 1421

troy.yoshino @winstontaylor.com

Learn more

Mark Goorts

Partner

+31 88 0243 051

mark.goorts @winstontaylor.com

Learn more

Mathilde Lefranc-Barthe

Partner

+33 1 53 64 82 63

mathilde.lefranc @winstontaylor.com

Learn more

Ben Bruton

Partner

+44 20 70111 8932

ben.bruton @winstontaylor.com

Learn more

Joe Pengelly

Senior Associate

+44 20 7300 4265

joe.pengelly @winstontaylor.com

Learn more

Seán Carroll

Senior Associate

+353 1 224 1092

seán.carroll @winstontaylor.com

Learn more

Sorcha Nic Einrí

Associate

+35 387 453 3299

sorcha.mckendry @winstontaylor.com

Learn more

Winston Taylor excels at making litigation as painless as possible by being on top of everything.

Chambers & Partners

UK Commercial and Corporate Litigation, 2027


STAY IN THE ACTION

Sign up to updates, events, and more from Winston Taylor.

Subscribe

Policies

Fraud & scams

Legal notices

Regulatory

Winston Taylor N.V. regulatory

Terms of use

Discover

Capabilities

People

Insights & events

Company

About

Careers

Locations

Social

LinkedIn

Instagram

YouTube

Media contacts


Attorney advertising. The information contained herein is for educational and informational purposes only and is not intended to be and should not be construed as legal advice. Winston Taylor N.V. and WS SELAS are part of the Winston Taylor network as separate legal entities operating from its offices in the Netherlands and Belgium and France, respectively. Further information on Winston Taylor can be found on our regulatory page at: www.winstontaylor.com. Winston Taylor LLP Headquarters: 300 N. LaSalle Drive Chicago, IL 60654-3406. Phone: +1 (312) 558-5600.

© 2026 Winston Taylor LLP. All rights reserved.