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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.
WA9 5DA
WA9 5DB
WA9 5GA
WA9 5GB
WA9 5GD
WA9 5GE
WA9 5UA
WA9 5UB
WA9 5UD
WA9 5UE
WA9 5UF
WA9 5UG
WA9 5UH
WA9 5UJ
WA9 5UL
WA9 5UN
WA9 5UQ
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