 The two-parter took approximately six weeks in 2008 to film; regular filming began on 18 February 2008 and ended on 29 March. The first scene shot for "The Stolen Earth" — a news report that starred Lachele Carl as Trinity Wells — was filmed on 31 January 2008 in a news studio at BBC Wales'Broadcasting House. The first week of filming took place entirely at the show's studios in Upper Boat, Rhondda Cynon Taf; most of the scenes set in the Torchwood Hub and the TARDIS — including the regeneration scene — were filmed in the period.
