Surrey
From Tardis Wiki, the free Doctor Who reference
Surrey was a county of England. Heathrow Airport was in Surrey. (TV: The Visitation, Time Flight)
One of the sections of Starship UK was Surrey. TV: The Beast Below)
Behind the scenes
Katy Manning, Nicola Bryant, Bonnie Langford, Paul McGann, and Alex Kingston were all born in Surrey.
The Surrey Heathland was used to double for the Peak District in Derbyshire in Doctor Who and the Silurians.