Information for London
EU, EEA and Swiss nationals do not require a visa, and can enter London with either a valid national identity card or passport.
Nationals of Anguilla, Andorra, Antigua and Barbuda, Argentina, Australia, Bahamas, Barbados, Belize, Bermuda, Botswana, Brazil, British Virgin Islands, Canada, Chile, Costa Rica, Dominica, East Timor, El Salvador, Falkland Islands, Grenada, Guatemala, Honduras, Hong Kong, Israel, Japan, Kiribati, Macau, Malaysia, Maldives, Marshall Islands, Mauritius, Mexico, Micronesia, Monaco, Montserrat, Namibia, Nauru, New Zealand, Nicaragua, Palau, Panama, Papua New Guinea, Paraguay, Pitcairn Islands, Saint Kitts and Nevis, Saint Vincent and the Grenadines, Samoa, San Marino, Seychelles, Singapore, South Korea, Solomon Islands, Saint Lucia, Saint Helena, Taiwan, Tonga, Trinidad and Tobago, Tristan da Cunha, Tuvalu, Turks and Caicos Islands, Uruguay, United States, Vanuatu, and Vatican City require passports for entry, but do not require a visa for travel purpose for up to 6 months.
Nationals of Oman, Qatar and the United Arab Emirates may apply for an Electronic Visa Waiver (EVA), which is valid for tourism and study, and stay for up to 6 months.
Nationals of China and India who have a valid Irish Short-stay Visa and endorsed with "BIVS" and who have cleared immigration in Ireland can visit the UK visa-free until their current permission to enter/remain in Ireland expires.