Spaceport One was a leisure and shopping complex on the outskirts of Dorfnan City. The Judoon served as security guards.

An attempted Reptilodon invasion of Spaceport One was led by General Mystan. Rory Williams activated the transmat gateway prematurely while trying and failing to sabotage it, and Mystan's party was brought through. Rory informed Judoon security of the invasion (PROSE: Rory's Adventure) and the Reptilodons were arrested. (PROSE: Amy's Escapade)

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