This page lists appearances of the Space Security Service (SSS) in the order in which they experienced them. This timeline is based upon observations of the Doctor Who universe and the events that occur during each of these stories.
- Before Sara's time.
- Sara Kingdom is chosen for SSS' first mission.
- Early in Sara's career
- Sara is now trained and efficient.
- Set in 3999.
- In the 41st century, the SSS, whose records of the Daleks span back to the Dalek War Machines, is engaged against the New Dalek Paradigm in a conflict which has lasted 100 years. Some decades after The Daleks' Master Plan, the Daleks lost Caridos in 3994.
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