Google said today that it will start offering user choice billing in the U.K., giving Google Play developers the ability to use other billing options instead of Google’s own system. The change kicks in on March 29, initially only to non-game developers. If developers opt for it, they cannot replace Google Play billing altogether. Instead, the third-party route will be offered as an option. Developer who opt to use an alternative billing option get a 4% discount from the fees they pay to Google (...