‘Brilliant in their legal advice’, Hausfeld & Co LLP is a go-to adviser for claimant-side competition litigation clients. The firm advises European companies on bringing anti-competitive behaviour claims and acts for class representatives in opt-out collective actions against leading tech companies and in abuse of dominance claims. With a network of European offices, it is able to support clients in enforcement action as well as follow-on and stand-alone damages claims. The team is led by Scott Campbell, who advises on cartel damages claims and in actions across the EU and US. Anthony Maton is well-versed in fund structuring in collective actions, while Nicola Boyle brings experience in collective actions in the infrastructure and automotive sectors. Lesley Hannah focuses on class actions in the tech sector. Joanna Christoforou represents clients before the CMA, CAT, Court of Appeal and Supreme Court. Tom Bolster is noted for his automotive sector knowledge, while Luke Streatfeild has experience on both the claimant and defendant side of collective proceedings.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

The team is innovative and creative, and comprises good lawyers with a very good team spirit.
Lesley Hannah, Nicola Boyle, and Joanna Christoforou are all extremely good lawyers who are very easy to work with.
Nicola Boyle is a fantastic leader of the team, being one of the best all-round lawyers I have worked with. Luke Streatfield is excellent. His judgment is spot on, and he gives sound commercial advice.
Hausfeld is the most highly regarded claimant competition firm. They have strength throughout the team, and all the fee-earners have extensive experience in competition litigation. They always have their clients' interests at heart and achieve excellent results.
Lesley Hannah is outstanding: brilliant under pressure, with excellent judgment. She leads a team of high-quality associates.
Several individuals at Hausfeld stand out as they combine strong technical expertise with excellent judgment and a clear understanding of our business context. Their advice is consistently decision-oriented, pragmatic, and proportionate. I would highly recommend two individuals: Nicola Boyle and Julia von Eitzen. What makes them stand out is not only technical excellence, but their ability to exercise sound legal judgment in complex situations, translating complex legal issues into clear, actionable recommendations aligned with our risk appetite and business objectives. They avoid unnecessary "over-lawyering" and significantly reduce decision complexity rather than adding to it.

Key clients

Consumers’ Association Which?
Infederation Ltd (Foundem)
London Array Limited
Justin Le Patourel A&A Class Representative Limited

Work highlights

Acted for the class representative in Kent v Apple in the first trial against a tech giant for a claim brought under the CAT collective regime for 7 weeks in January and February 2025.

Acting in the first ever consolidation of two competing UK opt-out collective actions on behalf of hundreds of thousands of UK publishers of websites and apps against Google for alleged anti-competitive practices in the online display advertising market, estimated to be worth £13.6 billion.

Representing and advising several European car manufacturers in relation to possible claims arising out of the RoRoand Thermal Systems cartels.

Lawyers

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