Britain's competition tribunal has approved a £3 billion ($4 billion) lawsuit against Apple over its iCloud storage service, consumer group Which? said, clearing the way for tens of millions of consumers to join a collective action.

The Competition Appeal Tribunal granted earlier in June a collective proceedings order allowing Which? to represent Apple users, after rejecting an attempt by the US tech giant to block parts of the case.

Which? filed the claim in November 2024 and argues Apple abused a dominant position by "trapping" users of iPhones and other devices into its iCloud storage service, limiting their ability to switch to rival cloud providers.

The consumer group says Apple did this by technically restricting how certain files can be stored, tying iCloud to iOS devices and using prompts and system design to steer users towards its own service, weakening competition and driving up prices.

"Which? wants to make clear that no company, no matter how powerful, can get away with abusing its position," Which? Chief Executive Anabel Hoult said in a statement.

In response to a request for comment, Apple said the claims were unfounded.

"We work hard to make iCloud a great experience, but no customer is required to use it and customers in the UK have plenty of alternatives to choose from," it said in an emailed statement.

The case is being brought on behalf of nearly 40 million UK iCloud users who used the service between November 2018 and June 2026. Which? estimates total damages at around £3 billion, with potential payouts of up to £77 per person if the claim succeeds.

A trial is expected in 2028.

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