Hounslow is a large suburban district of West London, England, 10+3⁄4 miles west-southwest of Charing Cross. It is the administrative centre of the London Borough of Hounslow, and is identified in the London Plan as one of the 14 metropolitan centres in Greater London. It is bounded by Isleworth to the east, Twickenham to its south, Feltham to its west and Southall to its north. The Hounslow post town covers the TW3, TW4, TW5 and TW6 postcodes.