Nearly a quarter of a million people in the UK accessed the BBC iPlayer through their iPhones in July 2010

"In July 2010, 6,400 programmes (1,026 hours of programming) were streamed from the iPlayer to Android devices
In the same month, 5,272,464 programmes were "requested" from the iPlayer to Apple mobile devices (iPhone, iPod Touch and iPad)
In July 2010, there was an average of 230,016 Apple mobile device users accessing programmes via the iPlayer each week
In the same month, there was an average of 1,106 Android device users accessing programmes via the iPlayer each week"
Source:  The Guardian, 27th August 2010