BBC Radio 4 Extra

BBC Radio 4 Extra, formerly BBC Radio 7 and BBC 7, is a radio channel owned by the British Broadcasting Corporation.

Big Finish Productions' Eighth Doctor Adventures premiered on BBC 7 with the first part of Blood of the Daleks on 31 December 2006. Each episode of the first season was broadcast alongside a 10 minute making of entitled Beyond the Vortex. However, the second, third and fourth series debuted on CD prior to their radio broadcasts, carrying over to Radio 7's rebranded successor, Radio 4 Extra.

Radio 4 Extra also broadcasts Big Finish Doctor Who audio dramas as part of its programme The 7th Dimension, hosted by Nicholas Briggs and latterly Toby Hadoke.