Deep Space Nine
From Tardis Wiki, the free Doctor Who reference
Deep Space Nine was a television series (PROSE: Autumn Mist) that aired prior to Sam Jones' home time of 1997. (PROSE: The Eight Doctors et al.)
"Changelings" were involved in the show. Sam noted that she did not see much of the show because her dad was always watching the news. (PROSE: Autumn Mist)
Behind the scenes
Star Trek: Deep Space Nine is the full name of the series, but it has not been properly identified as a Star Trek series in Doctor Who media.