If Apple and Google don’t make it easier for users to discover third-party browsers, the companies will not have as much of a competitive need to improve Safari and Chrome.

A U.K. competition authority investigation of Apple and Google's mobile browsers has concluded that the mobile duopoly's policies are "holding back

Google’s Android mobile ecosystem is also complicit in impeding competition, according to the CMA report, albeit to a lesser extent. The issues flagged by the investigation include Apple requiring all browsers on iOS to run on its WebKit browser engine,

The massive 611-page report, published this week by the Competition and Markets Authority, pulls no punches in criticizing Apple and Google's restrictive mobile browsing policies. The

Apple and Google face problems in the UK because of their mobile browsers. A commission of inquiry concluded that they are hindering competition.

Britain's antitrust regulator said its inquiry group had found the mobile browser market, dominated by Apple and Google, was not working well for consumers and businesses, supporting its decision to launch an investigation into the sector in January.