
So...Brexit.
I would recommend that you double check what kind of paperwork needs to be done before you plan your trip -
PLEASE CHECK OFFICIAL SITES AS THEY ARE MORE UP TO DATE THAN US.
https://visaguide.world/europe/uk-visa/who-needs-uk-visa/#:~:text=Everyone who wants to stay,for longer than six months.
THE BASELINE IS:
If you are from the US, an EU Member State, or certain Commonwealth countries, you do not need a visa for the UK for up to six months.
You should only need a UK visa if you are from one of the following countries:
Western Sahara
Albania
Algeria
Angola
Armenia
Azerbaijan
Bahrain
Bangladesh
Belarus
Benin
Bhutan
Bolivia
Bosnia and Herzegovina
Burkina Faso
Myanmar
Burundi
Cambodia
Cameroon
Cabo Verde
Central African Republic
Chad
China
Colombia
Comoros
Democratic Republic of the Congo
Republic of the Congo
Cuba
Cyprus
Djibouti
Dominican Republic
Ecuador
Egypt
Equatorial Guinea
Eritrea
Ethiopia
Fiji
Gabon
Gambia
Georgia
Ghana
Guinea
Guinea-Bissau
Guyana
Haiti
India
Indonesia
Iran
Iraq
Ivory Coast
Jamaica
Jordan
Kazakhstan
Kenya
Kosovo
Kuwait***
Kyrgyzstan
Laos
Lebanon
Lesotho
Liberia
Libya
North Macedonia
Madagascar
Malawi
Mali
Mauritania
Moldova
Mongolia
Montenegro
Morocco
Mozambique
Nepal
Niger
Nigeria
North Korea
Oman***
Pakistan
Palestine
Peru
Philippines
Qatar***
Russia
Rwanda
Sao Tome and Principe
Saudi Arabia
Senegal
Serbia
Sierra Leone
Somalia
South Africa
Sri Lanka
Sudan
Suriname
Switzerland
Syria
Tajikistan
Tanzania
Thailand
Togo
Tunisia
Turkey
Turkmenistan
Uganda
Ukraine
United Arab Emirates***
Uzbekistan
Vatican City*
Venezuela**
Vietnam
Yemen
Zambia
Zimbabwe