Oseidon
From Tardis Wiki, the free Doctor Who reference
Oseidon was a planet located in Mutter's Spiral. Though similar to Earth in terms of gravity and atmosphere, it had the highest levels of radiation in Mutter's Spiral. This radiation became increasingly more powerful as time went on, forcing the native Kraals to search for a new home. In preparation for an invasion of Earth, a reproduction of the English village of Devesham and the adjoining Space Defence Station was created on Oseidon where the Kraal android's were tested. (TV: The Android Invasion)