European Opt-Out Class Action Claims Pass €200 Billion as Courts Turn Attention to Funding Arrangements
The cumulative value of opt-out class actions across Europe's highest-risk jurisdictions has surpassed €200 billion, and filings have resumed growth after a one-year dip, according to CMS's European Class Action Report 2026.
As reported by Scottish Legal News, the number of class actions filed across Europe rose to 107 in 2025 from 99 in 2024, still below the 2023 peak but pointing to renewed activity. In the UK, the total value of class actions climbed to €179.52 billion from €159.55 billion. Across the three leading opt-out jurisdictions — the UK, the Netherlands and Portugal — the combined value of opt-out claims reached €203.45 billion, up from €173.09 billion.
The growth since 2020 is steeper still. UK opt-out claim values have risen almost fivefold, from €21.65 billion to €101.66 billion, while the three-jurisdiction total has increased nearly tenfold from €22.52 billion.
Consumer and competition claims remained the largest category at 37% of filings, with product liability and personal injury at 14% and data protection at 13%. CMS expects the EU Product Liability Directive's implementation to broaden the scope for claims involving software and AI systems.
Kenny Henderson, a partner at CMS, said the €200 billion figure "would have been unthinkable just a few years ago," and that for large corporates operating in Europe, class actions are "an established and increasingly interconnected litigation risk." The report identifies litigation funding as a principal area to watch, noting that courts across Europe are paying closer attention to the relationship between funders and claimants, with significant judicial guidance expected in the coming years.










