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SW1Y 4SJ
a defunct large user postcode in City of Westminster
This postcode was deleted in July 2015.
The nearest currently active postcodes are:
SW1Y 4AD
St. James'S Square SW1Y 4JU
SW1Y 6AH
St. James'S Square SW1Y 4PD
Babmaes Street SW1Y 6HD
Jermyn Street SW1Y 6EE
Babmaes Street SW1Y 6HF
Jermyn Street SW1Y 6HB
Jermyn Street SW1Y 6RP
Jermyn Street SW1Y 6HA