| European Union Members | ||||
| Austria | Denmark | Hungary | Malta | Slovenia |
| Belgium | Estonia | Ireland | Netherlands | Spain |
| Bulgaria | Finland | Italy | Poland | Sweden |
| Cyprus | France | Latvia | Portugal | |
| Croatia | Germany | Lithuania | Romania | |
| Czech Republic | Greece | Luxembourg | Slovakia | |
| Commonwealth Countries | |||
| Antigua and Barbuda | Ghana | Namibia | South Africa |
| Australia | Grenada | Nauru | Sri Lanka |
| The Bahamas | Guyana | New Zealand | Togo |
| Bangladesh | India | Nigeria | Tonga |
| Barbados | Jamaica | Pakistan | Trinidad and Tobago |
| Belize | Kenya | Papua New Guinea | Tuvalu |
| Botswana | Kingdom of Eswatini | Rwanda | Uganda |
| Brunei Darussalam | Kiribati | Saint Kitts and Nevis | United Kingdom |
| Cameroon | Lesotho | Saint Lucia | United Republic of Tanzania |
| Canada | Malawi | Saint Vincent and the Grenadines | Vanuatu |
| Cyprus* | Malaysia | Samoa | Zambia |
| Dominica | Maldives | Seychelles | Zimbabwe |
| Fiji | Malta* | Sierra Leone | |
| Gabon | Mauritius | Singapore | |
| The Gambia | Mozambique | Solomon Islands | |
* Although also EU member states, citizens of Cyprus and Malta are eligible to be registered to vote in respect of all elections held in the UK
Citizens of Commonwealth countries that have been suspended from the Commonwealth retain their voting rights. Their voting rights would only be affected if their country was also deleted from the list of Commonwealth countries in the British Nationality Act 1981 through an Act of the UK Parliament.
| British Overseas Territories | |
| Anguilla | Montserrat |
| Bermuda | Pitcairn, Henderson, Ducie and Oeno Islands |
| British Antarctic Territory | St Helena, Ascension and Tristan da Cunha |
| British Indian Ocean Territory | South Georgia and the South Sandwich Islands |
| Cayman Islands | Sovereign Base areas of Akrotiri and Dhekelia on Cyprus |
| Falkland Islands | Turks and Caicos Islands |
| Gibraltar | Virgin Islands |
Following its transfer to Chinese sovereignty on 1 July 1997, Hong Kong was deleted from the list of British Overseas Territories. As a result, former residents of Hong Kong are not automatically qualifying Commonwealth citizens.
Only those previous residents of Hong Kong who hold a British Overseas Territories, British Nationals (Overseas) or British Overseas passport meet the nationality criterion for all elections in the UK. Any previous resident of Hong Kong who only has a Chinese Special Administrative Region passport is Chinese and may not register as a qualifying Commonwealth citizen. They may, however, be eligible to register as a qualifying foreign national.