The CBBC and CBeebies channels both launched in 2002, coinciding with a relaunch of the CBBC strands on BBC One and BBC Two at the time. They originally broadcast from 7am and 6am until 7pm, sharing the space on Digital with BBC Choice/Three and BBC4. In the case of CBBC, hours were extended further in 2016 to 9pm with the closure of BBC Three. CBeebies is targeted at under fives, with its collection of programmes such as The Tweenies and Bill and Ben, whilst CBBC caters for the rest of the child/teenage audience. Both are promoted for their lack of commercial advertisements, with them being licence-fee funded.
There are some practices carried out on these channels which the BBC would never get away with for adult audiences. All archive 4:3 programmes have the top and bottom hacked off making it 14:9 to pretend they're widescreen programmes. For this reason all the clips on this page are in 14:9 letterbox. Animated graphics over the programming is also a frequent occurrence, although still considerably less than their commercial rivals.