Name
- Ainslie, Robert, 1st Baronet, diplomat and numismatist, 1730-18122
- Byng, George, 4th Viscount Torrington2
- Douglas, George, 16th Earl of Morton, landowner, 1761-18272
- Douglas, Robert, army officer and correspondent of Sir Robert Murray Keith,, fl 1773-17872
- Drummond and Co, bankers, London2
- Drummond, Andrew Berkeley, banker, 1755-18332
- Eden, Morton Frederick, 1st Baron Henley2
- Ewart, Joseph, diplomat, 1759-17922
- Fitz Herbert, Alleyne, Baron St Helens, ambassador and privy counsellor, 1753-18392
- Fraser, Charles Henry, British Resident in the Hanse Towns2
- Fraser, William, Under Secretary of State2
- Gaudy, Catherine, correspondent of Sir Robert Murray Keith, fl 1776-17882
- Gibsone, Alexander, British Consul at Danzig2
- Gordon, William, army officer and correspondent of Sir Robert Murray Keith, fl 1783-17862
- Green, Nathaniel, Consul at Trieste and (1787) at Nice2
- Grenville, Richard, General; of Add MS 352002
- Harris, James, 1st Earl of Malmesbury2
- Livingston, E-, of Add MS 355282
- Mann, Horace, 1st Baronet, British Minister at Florence2
- Murray, Frances M-, Miss2