Here is all the useful information on the diplomatic representation of United Kingdom: Embassy of United States in United Kingdom
Embassy of United Kingdom in United States, Washington | Consulate of United Kingdom in United States, Boston | Consulate of United Kingdom in United States, Houston |
Consulate of United Kingdom in United States, New York City | Consulate of United Kingdom in United States, Denver | Consulate of United Kingdom in United States, Miami |
Consulate of United Kingdom in United States, Los Angeles | Consulate of United Kingdom in United States, Chicago | Embassy of United States in United Kingdom, London |
Consulate of United States in United Kingdom, Belfast | Embassy of United States in United Kingdom, Cardiff |