Willesden

From Tardis Wiki, the free Doctor Who reference

Willesden was an area located in north-west London.

The Doctor owned a house in Willesden. In 2009, the Tenth Doctor left Gabby and Cindy there, before going to an unnamed planet to meet his twelfth incarnation. The Doctor had asked Sarah Jane Smith to look in on them while he was away. (COMICVortex Butterflies)