Apple, Google Face New Antitrust Investigations in U.K.

The U.K.’s competition regulator wants to investigate the market power it says Apple Inc. and Google exert over some mobile-device software..

ramping up global antitrust scrutiny of the largest U.S. technology companies.

The Competition and Markets Authority said Friday that it intends to initiate so-called market investigations into how the companies control web browsers for mobile devices..

As well as complaints that Apple restricts cloud gaming on its devices. Under U.K. rules, market investigations can lead to binding orders to change practices, but no fines.

Separately, the CMA announced a traditional competition investigation—which could lead to fines—into conditions Google places on in-app payments in its mobile store.

That probe is similar to one the regulator opened into Apple’s App Store last year.

The new investigations stem from a report by the CMA published Friday that said Apple and Google have an effective mobile-device duopoly..

It enables them to exercise what the regulator called a stranglehold over mobile ecosystems.

Without intervention, the companies are likely to strengthen their positions in the sector, further restricting competition, the report said.

Apple said that it disagrees with some of the CMA’s conclusions and that it aims to work with the British regulator.