The Prohibited Sphere Hyperstore was a store on Gharusa Prime.
In 3764, a signing of "the Doctor"'s "autobiography" Doctor's Orders was scheduled in the Prohibited Sphere Hyperstore. Rose Tyler followed the Doctor's companion Penny to the bookshop and was kidnapped and taken to Clix from there. (COMIC: Doctormania [+]Loading...["Doctormania (comic story)"])