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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.
HP3 8PY
HP3 8RR
HP3 8RT
HP3 8RU
HP3 8RX
HP3 8RY
HP3 8RZ
HP3 8SA
HP3 8SB
HP3 8SD
HP3 8SE
HP3 8SF
HP3 8SG
HP3 8SH
HP3 8SJ
HP3 8SN
HP3 8SQ
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