What postcodes are covered by this service?

The following postcodes are covered by this service:

AB37-38

AB55-56

FK17-21

HS1-9

IV1-63

KA27-28

KW1-17

PA20-49

PA60-78

PH19-26

PH30-40

PH42-44

PH49-50

Why doesn't the order process accept my postcode?

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