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A UK Post Code is made up of a number of different parts like these; BS12 6LS or N1 1DF. All together these are known as Post Code Units. Only really large buildings or large mail users have an individual code unit all to themselves. Usually code units are shared between a number of different premises.
It is worth to note at this point that in a built up area an individual Post Code will represent a handful of houses all within a few 100 metres of each other whereas a Post Code unit in a remote or rural area may represent a group of dwellings many miles apart.
CM12 2AH
CM12 2AN
CM12 2AY
CM12 2BB
CM12 2BD
CM12 2BU
CM12 2BW
CM12 2BX
CM12 2BY
CM12 2DG
CM12 2DH
CM12 2DR
CM12 2DS
CM12 2DU
CM12 2DW
CM12 2DX
CM12 2DY
CM12 2EA
CM12 2ED
CM12 2EE
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