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RM12 9GU
a defunct large user postcode in Hornchurch, Havering
This postcode was deleted in April 2019.
The nearest currently active postcodes are:
RM12 9HF
RM12 9HP
RM12 9JE
RM12 9JF
RM12 9JH
RM12 9JJ
RM12 9JA
RM12 9JB
RM12 9JD
RM12 9HN