Rose Tyler described armed guards at the Fluren Temporal Bazaar as stormtroopers. (COMIC: Weapons of Past Destruction)
Donna Noble once referred to the soldiers of UNIT as stormtroopers. (TV: The Sontaran Stratagem)
The Ven-Katri Davrett were the stormtroopers of the Imperial Daleks. (PROSE: Remembrance of the Daleks)