UK postcodes and the postal zones are set out in the table below, if the postcode is not shown then the postal zone will be set as per the lower table.
|
| CountryZone | CountryZone |
| Afghanistan18 | Liechtenstein7 |
| Albania5 | Lithuania6 |
| Algeria19 | Luxembourg3 |
| Andorra6 | Macao17 |
| Angola19 | Macedonia13 |
| Anguilla18 | Madagascar19 |
| Antigua & Barbuda18 | Madeira10 |
| Argentina19 | Malasia17 |
| Armenia18 | Malawi19 |
| Aruba18 | Maldives19 |
| Ascension Island19 | Mali19 |
| Australia17 | Malta12 |
| Austria5 | Marshall Islands18 |
| Azerbaijan18 | Martinique18 |
| Azores10 | Mauritania19 |
| Bahamas18 | Mauritius19 |
| Bahrain18 | Mexico16 |
| Balearic Islands19 | Micronesia18 |
| Bangladesh19 | Moldova13 |
| Barbados18 | Monaco4 |
| Belarus13 | Mongolia18 |
| Belgium3 | Montserrat19 |
| Belize19 | Morocco18 |
| Benin19 | Mozambique19 |
| Bermuda18 | Myanmar19 |
| Bhutan19 | Namibia19 |
| Bolivia19 | Nauru19 |
| Bosnia-Herzegovina14 | Nepal19 |
| Botswana18 | Netherlands3 |
| Brazil19 | Netherlands Antilles19 |
| Brunei Darussalam19 | New Caledonia18 |
| Bulgaria6 | New Zealand18 |
| Burkina Faso19 | New Zealand Island Territories18 |
| Burundi19 | Nicaragua19 |
| Cambodia19 | Niger19 |
| Cameroon19 | Nigeria18 |
| Canada16 | Norfolk Island18 |
| Canary Isles13 | Northern Ireland1 |
| Cape Verde19 | Northern Mariana Islands18 |
| Cayman Islands18 | Norway6 |
| Central African Republic19 | Oman18 |
| Chad13 | Pakistan18 |
| Channel Islands1 | Panama19 |
| Chile19 | Papua New Guinea18 |
| China (Peoples Republic of)17 | Paraguay19 |
| Christmas Island19 | Peru19 |
| Cocos (Keeling) Islands19 | Phillippines17 |
| Columbia19 | Pitcairn Islands4 |
| Comoros19 | Poland5 |
| Congo19 | Portugal5 |
| Corsica19 | Puerto Rico16 |
| Costa Rica19 | Qatar18 |
| Croatia13 | Rest of World20 |
| Cuba19 | Reunion19 |
| Cyprus12 | Romania6 |
| Czech Republic5 | Russia17 |
| Denmark5 | Rwanda19 |
| Djibouti19 | Samoa18 |
| Dominica18 | San Marino7 |
| Dominican Republic18 | Sao Tome & Principe4 |
| East Timor18 | Sardinia20 |
| Ecuador19 | Saudi Arabia18 |
| Egypt18 | Scilly Isles20 |
| El Salvador19 | Scotland (Mainland)0 |
| England0 | Scottish Isles1 |
| Equatorial Guinea19 | Senegal19 |
| Eritrea19 | Serbia13 |
| Estonia6 | Serbia & Montenegro20 |
| Ethiopia19 | Seychelles19 |
| Falkland Islands19 | Sicily20 |
| Far East20 | Sierra Leone19 |
| Faroe Isles20 | Singapore17 |
| Fiji18 | Slovakia6 |
| Finland5 | Slovenia6 |
| France4 | Solomon Islands18 |
| French Guiana19 | Somalia20 |
| French Polynesia18 | South Africa18 |
| Gabon19 | Spain5 |
| Gambia19 | Spanish Territories of North Africa20 |
| Gaza & Khan Yunis18 | Spitzbergen20 |
| Georgia18 | Sri Lanka18 |
| Germany4 | St Christopher & Nevis18 |
| Ghana19 | St Helena20 |
| Gibraltar13 | St Lucia18 |
| Greece5 | St Pierre & Miquelon20 |
| Greenland13 | St Vincent & Grenadines18 |
| Grenada18 | Sudan20 |
| Guadaloupe19 | Swaziland19 |
| Guam18 | Sweden5 |
| Guatemala19 | Switzerland6 |
| Guayana19 | Syria19 |
| Guernsey1 | Taiwan17 |
| Guinea19 | Tajikistan18 |
| Guinea-Bissau19 | Tanzania19 |
| Haiti19 | Tasmania19 |
| Honduras19 | Thailand18 |
| Hong Kong17 | Togo19 |
| Hungary6 | Tonga18 |
| Iceland13 | Trinidad & Tobago18 |
| India18 | Tristran da Cunha19 |
| Indonesia17 | Tunisia19 |
| Iran18 | Turkey13 |
| Iraq18 | Turkmenistan18 |
| Irish Republic1 | Turks & Caicos Islands18 |
| Isle of Man1 | Tuvalu19 |
| Israel18 | Uganda19 |
| Italy5 | Ukraine13 |
| Ivory Coast5 | United Arab Emirates18 |
| Jamaica18 | Uruguay19 |
| Japan17 | USA16 |
| Jersey1 | Uzbekistan18 |
| Jordan19 | Vanuatu18 |
| Kazakhstan18 | Vatican City State5 |
| Kenya18 | Venezuela19 |
| Kirghizstan18 | Vietnam18 |
| Kiribati18 | Virgin Islands (British)18 |
| Korea South17 | Virgin Islands (USA)18 |
| Kosovo13 | Wake Island4 |
| Kuwait18 | Wales0 |
| Laos19 | Wallis & Futuna Islands18 |
| Latvia6 | Yemen19 |
| Lebanon19 | Zambia19 |
| Liberia19 | Zimbabwe18 |
| Libya19 | |
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