Kent

Kent was a county of England. Smithwood Manor (the Doctor's house) on Allen Road was in Kent. (PDA: Verdigris)

A group of Daleks once landed in Kent as an advance guard for an invasion. They were thwarted by a mole. (DAN: The Small Defender)

Behind the scenes

 * Kent was used as a filming location for Doctor Who television stories, among others, Inferno, The Curse of Fenric and notably the Dungeness nuclear power station in The Claws of Axos.