SW postcode area
The SW ( South Western ) postcode area , also known as the London SW postcode area , is a group of 29 postcode districts of a broad radial swathe of southwest London , England covering around 19 . 890 live postcodes as far as Mortlake , Streatham and Raynes Park . 
<triplet> SW postcode area <subj> London <obj> located in the administrative territorial entity