The SW1Y 4 London (Central London) Postcode Sector
The SW1Y 4 postcode sector is within the county of Greater London in the Greater London area of England..
SW1Y 4 is a postcode sector within the SW1Y postcode district which is within the SW London - SW postcode area.
The Royal Mail delivery office for the SW1Y 4 postal sector is the .
The area of the SW1Y 4 postcode sector is 0.04 square miles which is 0.09 square kilometres or 22.70 square acres.
Map of the SW1Y 4 Postcode Sector
Explore the sw1y 4 postcode sector by using our free interactive map.