Britain’s antitrust watchdog has targeted Google and Apple for their “strategic” roles in mobile ecosystems, opening the door for regulators to impose changes to their business practices to improve competition.

Britain’s antitrust watchdog is labeling Google a “strategic” player in the online search advertising market, paving the way for regulators to force the company to change its business practices to ensure more competition in that market.

Britain’s antitrust watchdog proposes labeling Google’s and Apple’s mobile ecosystems with “strategic market status.”.

The U.K.’s antitrust watchdog says Google could be forced to let British users choose whether to use rival search services, as it proposes using new digital regulations to boost competition.