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EC1Y 4YS
a defunct large user postcode in City of London, London Corporation
This postcode was deleted in December 1990.
The nearest currently active postcodes are:
Silk Street EC2Y 8HQ
Chiswell Street EC1Y 4SB
Chiswell Street EC1Y 4SA
Chiswell Street EC1Y 4SE
Barbican EC2Y 8DD
Barbican EC2Y 8NB
St Giles Terrace EC2Y 8DX
Chiswell Street EC1Y 4GR
Chiswell Street EC1Y 4XX
Chiswell Street EC1Y 4SF