The Daleks in London (unproduced TV story)
From Tardis Wiki, the free Doctor Who reference
The Daleks in London was an unproduced Doctor Who serial intended to conclude Season 9
It was written by Robert Sloman. It was cancelled mainly due to the fact it bore too much in common with The Dalek Invasion of Earth. It was replaced by The Time Monster, while the idea of the Daleks was inserted into the opening story, then known as The Ghost Hunters, which evolved into Day of the Daleks. [1]