North Wales
From Tardis Wiki, the free Doctor Who reference
North Wales was a region of Wales. The Death Zone on Gallifrey was about the size of North Wales, though Gallifreyans believed it covered a great distance. Both Iris Wildthyme and the Doctor knew this. (EDA: The Scarlet Empress)
The iron constituting one guerilla's ray gun was originally mined in North Wales. (DW: Day of the Daleks)
