Amazon Faces Lawsuit Impacting 45 Million Shoppers in the UK

Amazon, the global e-commerce powerhouse, is once again under scrutiny, this time in the UK. On 14 August 2025, the Association of Consumer Support Organisations (ACSO) filed a collective lawsuit with the UK’s Competition Appeal Tribunal, representing millions of shoppers and alleging violations of competition law that may have resulted in widespread overcharging.

According to ACSO, the case centers on Amazon’s price-parity policies, which the group contends have unfairly impacted as many as 45 million UK consumers. The allegations span a six-year period from August 2019 to August 2025, during which ACSO argues customers were forced to pay inflated prices when purchasing from third-party sellers on Amazon’s marketplace.

Allegations of Anti-Competitive Conduct

At the heart of the lawsuit is the claim that Amazon’s price-parity policies restrict third-party sellers from offering lower prices for their products on alternative online platforms. In practice, ACSO argues, this prevents fair competition across the e-commerce…