British judges have ruled that Google must face a £13.6 billion lawsuit in London over alleged anti-competitive behavior in digital advertising.

The lawsuit is brought by Ad Tech Collective Action LLP and seeks $17.4 billion in damages from Google for abusing its dominant market position.

The UK's Competition Appeal Tribunal has allowed the class action lawsuit to proceed, despite Google's objections.

The lawsuit claims Google's actions have reduced revenues for online content publishers by raising ad platform prices and decreasing online ad revenue.

Google denies the allegations and states that it works constructively with publishers.

This case is part of growing regulatory scrutiny globally, with legal challenges also pending in the US, Canada, Europe, and Japan.

Google has been fined in France for similar practices and faces another lawsuit in the UK for anti-competitive behavior.

The trial is set to take place by the end of 2025, with Google planning to vigorously oppose the lawsuit.

The decision is seen as a significant step for the victims of Google's alleged anti-competitive conduct.