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BT1 1GG
a defunct large user postcode in Northern Ireland
This postcode was deleted in September 2018.
The nearest currently active postcodes are:
Marquis Street BT1 1JJ
Castle Street BT1 1HE
King Street BT1 1HU
Castle Street BT1 1HD
Castle Street BT1 1HP
King Street BT1 6AD
King Street BT1 6BF
King Street BT1 6BZ
Chapel Lane BT1 1HH
College Avenue BT1 6BB