There is a superb unofficial site too. Virgin Independent, national The national frequency for the station broadcasting on 105.8 MHz FM in London. See that entry on the FM page for more details, including a live audio link. 1242 Capital Gold Kent Independent, local Based in Kent, so you may receive this in eastern parts of the capital. See sister station on 103.1 MHz FM .
Address details the same.
This used to be Invicta Supergold. It's part of the Capital Radio plc group. In a controversial move in 1999, Capital started broadcasting roughly the same programme as the original London Capital Gold on this frequency. Also broadcasts on 603. Religious worship, news, arts, gospel music, quizzes etc.