<P> The episode's opening shot is a repeat of the opening shot of "Rose", using a new arrangement of the same music . The cone - shaped building which has all its glass blown out from the ship's shockwave is 30 St Mary Axe, also known as the Swiss Re Building or "The Gherkin". The climactic scenes of the episode were shot on location at Wallis House, Brentford, one of the Golden Mile's few remaining Art Deco buildings . Parts of the episode were filmed at the Clearwell Caves in Gloucestershire . The prototype of the Sycorax swords was auctioned on eBay to raise funds for the Great Ormond Street Hospital Children's Charity . It raised £ 920.51 . During the live broadcast, the front page of the official BBC website stated: "THE CHRISTMAS INVASION is on BBC One NOW . HARRIET JONES SAYS: Switch this website off for Britain ." The tie - in website "Who is Doctor Who?" was also updated with a message from Mickey referencing the Guinevere One website, and an appeal to the Doctor to bring back Rose . </P> <P> The song playing during the wardrobe sequence, "Song for Ten" (named in reference to the Tenth Doctor), was composed by Murray Gold for the episode and sung by Tim Phillips . The closing credits had a new theme arrangement restoring the traditional "middle eight" section of the theme which had been omitted in the 2005 series . This was performed by the BBC National Orchestra of Wales, conducted by Gold . This arrangement was subsequently used for the closing titles of the 2006 series . </P> <P> Various pieces of music featured in this episode were released in December 2006 as part of the Doctor Who Soundtrack (produced by Silva Screen). These included the "Song for Ten", the music played behind Harriet Jones' speech and the music played as the spaceship arrives over London . </P> <P> Lachele Carl reappears as the reporter seen in "Aliens of London" / "World War Three". She is later seen in "The Sound of Drums", "The Poison Sky", "Turn Left", "The Stolen Earth" and The Sarah Jane Adventures story Revenge of the Slitheen . </P>

Doctor who season 1 episode 15 the christmas invasion