episode. Russell T Davies was enamoured by her performance, which he felt confirmed that the actress was "one of Wales's best-kept secrets", and subsequently wrote her a lead role in the Doctor Who spin-off Torchwood. Myles' Torchwood character Gwen Cooper is intimated to be related to Gwyneth in "Journey's End" after the Doctor asks Gwen about her family history. Alan David was cast as Mr Sneed; Gatiss was pleased with the casting, as he had grown up watching David. Filming and effects Although the story is set in 19th-century Cardiff, there were not enough Victorian-looking buildings left in Cardiff for the whole production to film there. The production filmed one day in Cardiff at the New Theatre on 19 September 2004 for the scene of Dickens' performance. On 20 September, the theatre's exterior, along with Dickens' departure scene, was filmed at Cambrian Place at Swansea Marina. The funeral parlour exterior was the Beaufort Arms Court in Monmouth, recorded on 21 September. More scenes in the Cardiff square were filmed on Church Street and St Mary's Street in Monmouth on 22 September. Small pieces of paper were sprayed as snow, which caused a problem as it scared the horses. However, the snow falling from the sky was a foam substance. A day of studio recording at the Unit Q2 warehouse in Newport took place on 23 September. The interiors of Sneed's parlour were shot at Headlands School in Penarth, a former children's home, from 27 September to 2 October. Based on research of Victorian morgues, the production team selected red and sepia as the main color scheme. When the episode underran, additional scenes and pick-ups were recorded at the school on 19 and 20 October. More scenes at Unit Q2 took place on 22 October, comprising pick-ups and Zoe Thorne recording her scenes as the Gelth. Thorne had been filmed separately as the Gelth head and was used as a template for animation. In other scenes, Thorne had the challenge of matching her voice-overs to the actors who portrayed the bodies animated by the Gelth. The actors who played the dead bodies possessed by the Gelth had simple make-up, with just shading and contact lenses and no prosthetics. The production team was mindful of the programme's audience, and decided to not have any missing facial features. Originally, visual effects company The Mill planned the computer-generated effects (CGI) to just be the