A consumer rights group in the U.K. has filed a lawsuit against Apple, claiming it locks its customers into the iCloud cloud storage service.

U.K. consumer-protection group Which? said the iPhone maker had breached competition rules by tying consumers to its iCloud storage service.

Apple encouraged its users to sign up to iCloud to store photos, videos and other data while making it difficult to use alternative providers. Customers then had to pay for the service once their data exceeded the free 5GB limit,

Apple is facing an almost £3 billion ($3.78 billion) lawsuit after British consumer group Which? on Thursday alleged that the company

Macworld Around 40 million Apple customers in the U.K. could be entitled to an average payout of £70 if a major new legal challenge is successful. The consumer publication Which? has announced what it describes as a landmark legal claim against the company for alleged breaches of competition law.