The Competition and Markets Authority said it had provisionally found that the two groups were able to leverage their market power to create largely self-contained ecosystems.
The statement is a fresh warning to tech groups after the regulator, with British government backing, stepped up scrutiny of the power they wield in a world increasingly lived online.
In another recent action, the CMA told Facebook (NASDAQ:FB) owner Meta it had to sell Giphy, the popular animated images platform it bought in 2020.
The regulator said on Tuesday it would consult on its initial Apple and Google findings and would welcome responses by Feb. 7. It expects to issue a final report by June.
“Apple and Google have developed a vice-like grip over how we use mobile phones and we’re concerned that it’s causing millions of people across the UK to lose out,” CMA Chief Executive Andrea Coscelli said.
Chris Philp, the tech and digital economy minister, said Britain’s “new pro-competition regime” would level the playing field between tech giants and smaller businesses.
Apple says its ecosystems provide security and privacy, enabling businesses to sell goods and create jobs. “Apple believes in thriving and dynamic markets where innovation can flourish,” it said.
Google had no immediate comment.
The CMA’s report set out a range of options that could address the issues, including making it easier for users to switch between Apple’s iOS and Google’s Android phones without losing functionality or data.
It is also looking at whether users could install apps through methods other than Apple’s App Store or Google’s Play Store.
The CMA said it was already investigating other elements of Apple and Google’s businesses, and said it would adopt a joined-up approach to these related cases.