Catherine Tregenna has only ever worked in romance.
Catherine Tregenna . She played the character Kirsty McGurk , for several years , in Pobol Y Cwm and a doctor in Satellite City . Doctor Who is a British science-fiction television programme produced by the BBC since 1963 . `` Meat '' is the fourth episode of the second series of British science fiction television series Torchwood , which was first broadcast by BBC Two on 6 February 2008 . Pobol y Cwm ( People of the Valley ; [ ˌpɔbɔl ə ˈkʊm ] ) is a Welsh-language television soap opera which has been produced by the BBC since October 1974 .