Christine Finn (16 July 1928-5 December 2007[1]) voiced Tin-Tin Kyrano in the supermarionation television series Thunderbirds, as well as in the two films Thunderbirds Are Go and Thunderbird 6. This included the first series episode The Man from MI.5, which crossed over into the Doctor Who universe by featuring the Daleks. Finn also played the tannoy in that episode, as well as many other guest characters over the duration of the series. She also voiced the regular character of Grandma Tracy although Grandma's part in The Man from MI.5 was restricted to a silent cameo.
Outside of Thunderbirds, she was probably best known for her role as Barbara Judd in the TV serial Quatermass and the Pit. Other television credits included one-time appearances in Adam Adamant Lives! and Dixon of Dock Green. Finn also performed in the theatre and on radio, starring in such productions as Henry VI Part III and The Importance of Being Earnest respectively.