Prohibited Sphere was a chain of stores in London that sold comics, books and audio files.
In 2015, the Prohibited Sphere in Piccadilly Circus gave away free copies of Zzagnar the All-Conquering. (COMIC: Give Free or Die)
The Prohibited Sphere Megastore was destroyed during the second Boneless invasion of N-Space. (COMIC: The Fourth Wall)
In the 38th century, there was a Prohibited Sphere Hyperstore on Gharusa Prime. (COMIC: Doctormania)
Behind the scenes Edit
Prohibited Sphere is based on the real world bookstore Forbidden Planet, where Al Ewing, Rob Williams and Cavan Scott signed Doctor Who comics on Free Comic Book Day 2015.