Apple has abused its dominant position by charging app developers an unfair 30% commission through its App Store, costing British consumers up to 1.5 billion pounds ($1.8 billion), a London tribunal heard on Monday.

LONDON (Reuters) - Apple and Amazon have successfully fought off a mass lawsuit in Britain over alleged collusion between the tech giants to remove resellers of new Apple products from Amazon's website, a tribunal ruled on Tuesday.

Lawyers representing the class action said that Apple excluded potential rivals from competing for customers on devices running its iOS operating system by forcing developers to sell their apps exclusively through its own App Store and charging commissions of 30% for purchases.