UK non-standard postcodes are, generally speaking, those outside mainland Britain. Here is a list of all UK non-standard postcodes: AB37-8, AB55-6, DD8-11, IV, HS, KA27-28, KW, PA20-49, PA60-78, PH19-44, PH49-50,
ZE, BT, IM, JE, GY, TR21-25.
If you are ordering from a country outside Europe you may be liable to pay import duties from customs. You are responsible for additional charges for customs clearance; we have no control over these charges and cannot predict what they may be. Customs policies vary widely from country to country; you should contact your local customs office for further information.