The allocation of channel numbers to radio stations, just like with TV channels, is part of the agreement with the channel owner. For instance, Capital appears on channel 958 as it matches their London FM frequency.
Logos & on screen content is another matter, as Virgin has different firmware for different boxes. With the TiVO boxes, again the onus is on the channel owner to develop anything that is visible on their channels, & to be quite honest with you, most of them will not part with the money to develop specific content for each digital platform. The legacy boxes are already operating at the limits of the installed firmware, & any more "tweaking" usually causes no end of problems for us customers, so is well left alone.
Cable customer since 1993. Services: FH TV, Sky Sports & Movies (2xV+), Talk Unlim Telco, VIVID 100, Virgin PAYG Mobile