A UK class action against Google

If you sell space for adverts on a website or mobile app or publish online content on a website or mobile app containing ad units, it’s possible you have suffered financial loss because of Google’s conduct.

Register to follow Ad Tech Collective Action LLP v Google – the claim for compensation.


In 2021, Google was fined by the French Competition Authority for abusing its dominant position in relation to ad tech services. It’s possible that all UK-based publishers that received revenue from the sale of online display ads have suffered financial loss by Google too.

Now, we’re applying to bring an opt-out claim at the UK Competition Appeal Tribunal, to obtain damages for affected publishers. That could include you.

Register your interest and stay up to date as the case progresses.


The team

Humphries Kerstetter LLP is a modern City law firm, specialising in the resolution of complex commercial disputes by litigation and arbitration. Serving both corporate and individual clients based in the UK and overseas, the firm operates out of the heart of Legal London, close to the Commercial Court and the international dispute resolution and arbitration centres. Humphries Kerstetter is perfectly placed for this case, with a prestigious reputation in the field of class actions and collective redress. The firm is particularly well-known in the competition law field, acting for very large groups including the interchange fees litigation against MasterCard and Visa.

Hausfeld & Co. LLP is a leading disputes-only law firm specialising in competition law, with significant expertise in all aspects of collective redress and group claims. In particular, Hausfeld & Co. LLP has extensive experience in managing litigation against global “Big Tech” companies, including opt-out collective claims such as these.

Geradin Partners has unrivalled expertise on ad tech. Geradin Partners acted for News Corp as the lead complainant in the French Competition Authority investigation that led to the adoption of the French Competition Authority decision. Geradin Partners also represented the European Publishers Council in the CMA’s investigation into Google’s Privacy Sandbox browser changes, and in filing a formal complaint with the European Commission on Google’s ad tech practices in February 2022. Geradin Partners have authored extensively on ad tech and their papers have been cited by the CMA and the Australian Competition & Consumer Commission.

Charles River Associates (or CRA) is a leading provider of antitrust economics advice across the globe. CRA is recognised for rigorous economic and empirical analyses accessible to specialists and non-specialists, before agencies and courts. This firm has extensive experience in developing antitrust theories of harm and estimating damages in the technology sector, and has advised both complainants and agencies in multiple matters involving Google.

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