Postcodes Excluded from Mainland UK:
AB36-38 – Aberdeen/highlands
AB55-56 – Aberdeen/highlands
BT – Northern Ireland
FK17-21 – Northern Ireland
G83 – Glasgow
GY – Guernsey
HS – Northern Highlands/ Oban
IM – Isle of Man
IV – Northern Highlands
JE – Jersey
KA27-28 – Arran/ Oban
KW – Highlands/ Orkney/ Shetlands
PA20-99 – Oban
PH15-99 – Nothern Highlands/ Oban
TR21-25 – Isles of Scilly
ZE – Orkney/ Shetland
