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CM1 1SX
a defunct large user postcode in Chelmsford, Chelmsford, Essex
This postcode was deleted in July 2007.
The nearest currently active postcodes are:
Broomfield Road CM1 1SN
Duke Street CM1 1JA
Duke Street CM1 9SU
Duke Street CM1 9TB
Duke Street CM1 9SD
Duke Street CM1 9SQ
Duke Street CM1 9TD
Duke Street CM1 9ST
Duke Street CM1 9TE
Duke Street CM1 9SS