Why am I being offered a Highlands and Islands service?

The following postcodes are serviced by the Highlands and Islands service because they are remote destinations:

AB37-38

AB54-56

FK17-21

HS 

IV1-63

KA27-28

KW1-17

PA20-49

PA60-78

PH19-26

PH30-40

PH42-44

PH49-50

ZE

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