<P> The music playing at the garden party is the "Twentieth Century Blues", originally from Noël Coward's 1931 play Cavalcade . The recording used here, edited together with other period music, is a 1931 recording of' Love is the Sweetest Thing' by Ray Noble and the New Mayfair Orchestra, featuring vocalist Al Bowlly . </P> <P> A framing device featuring the aged Agatha Christie (played by Daphne Oxenford) trying to recall the events that took place during her disappearance was deleted because the producers felt it diminished the story's urgency . The original ending featured the Doctor and Donna visiting the elderly Christie; a new ending in the TARDIS set was filmed after the producers decided to cut the framing sequence, much later than the filming for the rest of the story . </P> <P> The framing sequence and another scene cut for time are present on the Doctor Who Series 4 DVD box set . </P> <P> BARB figures show that "The Unicorn and the Wasp", was watched by 8.41 million viewers, making it the second most popular programme of the day (behind ITV's Britain's Got Talent) and the seventh most watched programme of the week . The episode received an Appreciation Index score of 86 (considered "Excellent"). </P>

Dr who the unicorn and the wasp cast