The UK Competition Appeal Tribunal rejects Google's bid to block a class action alleging it overcharged businesses for search ads and abused its dominance
Context & Ripple Effects
The tribunal had already allowed the business class action over Google's alleged digital-ad dominance abuse to proceed in 2024; its latest ruling removes Google's attempt to stop that case at the threshold. It arrives alongside a separate UK CMA objection to Google's display-ad-tech conduct, extending the company's competition-law exposure across ad markets.
European courts have also upheld separate Google abuse-of-dominance decisions involving shopping and Android, including the recent confirmation of the Android penalty. The UK case remains an allegation, but the procedural defeat keeps the claims on a path to be tested.
First-order effects
- Businesses in the proposed class can continue their claim that Google overcharged them for search advertising and abused dominance.
- Google must defend the search-ad allegations through the class-action process rather than ending the case through its blocking bid.
Second-order effects
- Google now faces an active private search-ad case alongside the CMA's separate display-ad-tech objection, requiring parallel responses to distinct UK competition challenges.
- The ruling gives business advertisers a viable collective route for pursuing alleged harm from Google's search-ad practices, rather than leaving the dispute solely to regulator-led enforcement.
Third-order effects
- If courts continue to permit collective competition claims against platform operators, private litigation may become a more durable complement to agency enforcement in UK digital markets.
- The combination of UK proceedings and upheld European abuse findings points to sustained legal scrutiny of how large platforms use control over adjacent digital services.
The trend: Competition challenges to platform gatekeepers are increasingly proceeding through parallel private class actions, national regulators, and European courts.