Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.
When Nikki met the Doctor, she was seventeen. She was investigating the criminal underworld of New Memphis with her father, who was also a private detective. After Nikki stopped the corruption of the underworld, a Judoon called Rok Ma joined her detective agency. (PROSE: Judgement of the Judoon)
Multi-adventures reference the rare instance when a companion is shown or stated to have multiple adventures with the Doctor but only appears in a single story.
If a medium is not mentioned, then this incarnation did not have companions who were original to that medium; it does not mean that this Doctor failed to appear in that medium.
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