Exploration Earth broadcast on 4 October 1976. Also in 1976 she appeared as Sarah Jane alongside Tom Baker's Doctor in the first ever BBC Enterprises audio spin-off from Doctor Who: a cassette and LP release of an abridged version of Genesis of the Daleks, narrated by Baker. Sarah Jane (played by Sladen) appeared in two BBC Radio plays starring Jon Pertwee as The Doctor in the 1990s: The Paradise of Death and The Ghosts of N-Space. She also appears, voiced by Sladen, in her own range of Big Finish audio dramas, consisting of nine stories released between 2002 and 2006. This series came to an unexpected end when the character was given her own television series, The Sarah Jane Adventures, detailed above. There are loose allusions to the audio series in the television series, including Sarah Jane's ownership of a Volkswagen. Sarah Jane appears in two audio stories based on The Sarah Jane Adventures, released in November 2007 on CD: The Glittering Storm by Stephen Cole and The Thirteenth Stone by Justin Richards, with both stories read by series star Elisabeth Sladen. This is the first time that BBC Audiobooks have commissioned new content for exclusive release on audio. Further pairs of audio stories were released every year until 2010, again all read by Sladen. In 2011, two audio stories were read by Daniel Anthony and Anjii Mohindra. Sladen's daughter Sadie Miller took over the role of Sarah Jane Smith for Big Finish audio dramas in 2021, first in Return of the Cybermen in March, a reworking of Gerry Davis' 1974 original script which was eventually filmed as Revenge of the Cybermen, with Tom Baker as the fourth Doctor; and then in The Third Doctor Adventures in May, with Tim Treloar as the third Doctor. The canonicity of Sarah Jane's appearances in the audio dramas is, like all Doctor Who spin-off media, unclear, and they may not even take place in the same continuity as one another. For example, the novels' mention of Sarah Jane as having been married is contradicted by the later Sarah Jane Smith audio play Dreamland, and the Sarah Jane Adventures episode "Invasion of the Bane". Reception, impact and legacy Sarah Jane Smith was consistently voted the most popular Doctor Who companion until the advent of the new series in 2005. Even in more recent times the character has continued to vie in popularity with Rose