Guest Stars Billie Piper as Rose Tyler Lesley Sharp as Sky Silvestry Daniel Ryan as Biff Cane Duane Henry as Mechanic Claude Rakie Ayola as Hostess Colin Morgan as Jethro Cane Lindsey Coulson as Val Cane David Troughton as Professor Winfold Hobbes Tony Bluto as Driver Joe Ayesha Antoine as Dee Dee Blasco