British Postal orders are accepted in more than 50 countries (see list below) while postal orders sent from any of these listed countries can be cashed at any Guernsey Post branch. When a Postal Order includes the recipient's name it can be deposited only into a bank account and cannot be cashed at a Post Office.
| Anguilla | Malawi |
| Antigua & Barbuda | Malaysia |
| Bahamas | Malta |
| Bangladesh | Mauritius |
| Barbados | Montserrat |
| Belize | Nigeria |
| Botswana | Pakistan |
| Brunei Darussalam | St Helena |
| Cayman Islands | St Kitts & Nevis |
| Cyprus | St Lucia |
| Dominica | St Vincent |
| Falkland Islands | Sierra Leone |
| Fiji | Singapore |
| The Gambia | Solomon Islands |
| Ghana | South Africa |
| Gibraltar | Sri Lanka |
| Grenada | Swaziland |
| Guernsey (Bailiwick of) | Tonga |
| Guyana | Tortola (British Virgin Islands) |
| India | Trinidad |
| Isle of Man | Tristan da Cunha |
| Jamaica | United Kingdom |
| Jersey | Western Samoa |
| Lesotho | Yemen (Peoples Democratic Republic |