A factory was a place where items were manufactured.

Wildthyme Unlimited was a factory in England in which Iris Wildthyme manufactured Suitors for her company, Suitors, Inc.. The robots were designed to resemble either the Fourth or Third Doctor. (PROSE: Suitors, Inc.)

In the alternate Earth where Rose Tyler's father Pete was still alive, the Cybus Cybermen had factories where they converted humans into Cybermen. (TV: The Age of Steel)

The Hellcombe Factory was owned by Lord Hellcombe during World War I. It manufactured British Proto-Daleks. It was secretly run by the Daleks for the Dalek Project. (COMIC: The Dalek Project)

The Bane made Bubble Shock! in their London Bubble Shock! factory. This was part of their plan to convert all of the human race into Bane zombies. The factory was destroyed in 2008. (TV: Invasion of the Bane)

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