West London
From Tardis Wiki, the free Doctor Who reference
West London was the region of London where Ealing was located. It was also the location of Southall, Perivale, Acton and Chiswick. During the Rakweed spread in 2009, people in West London were advised especially to act with extreme caution. (TV: The Gift)
Areas around Ealing, notably the London boroughs of Hillingdon, Brent, Hounslow and Richmond were also in west London. (TV: Revenge of the Slitheen)