Therefore, its known narrative elements are not a part of the Doctor Who universe as we, on this Wiki, choose to define it. It may have been the basis for a similar story in another medium, however — and that story may indeed be valid.
The Red Fort was an unproduced Doctor Who serial by Terry Nation intended for the second story of Season 2. It would have been set during the British Raj in India. It was never produced because public demand for a Dalek-return story grew and it was replaced by The Dalek Invasion of Earth.