Board Thread:The Reference Desk/@comment-188432-20130101172819/@comment-1398253-20130105014351

The disambiguation would be CBBC channel and CBBC on BBC1. As I recall, the first episode of SJA aired on red brand BBC One, the rest were on the CBBC channel, except for the first episode of each of the first two seasons (Revenge of the Slitheen and The Last Sontaran, they aired the next episode straight after on the channel). Those season premieres and all of Totally aired on the CBBC block on BBC One first.