| Current holder | Country | Dukedom | % Correct |
|---|---|---|---|
| Prince Andrew | United Kingdom | York | 91%
|
| HRH Prince Charles, Prince of Wales | England | Cornwall | 88%
|
| Prince Philip | United Kingdom | Edinburgh | 87%
|
| Prince William | United Kingdom | Cambridge | 86%
|
| Prince Edward | United Kingdom | Kent | 79%
|
| Edward Fitzalan-Howard | England | Norfolk | 72%
|
| Prince Richard | United Kingdom | Gloucester | 66%
|
| John Seymour | England | Somerset | 65%
|
| Peregrine Cavendish | England | Devonshire | 57%
|
| Charles Wellesley | United Kingdom | Wellington | 57%
|
| Hugh Grosvenor | United Kingdom | Westminster | 57%
|
| Jamie Spencer-Churchill | England | Marlborough | 49%
|
| Ralph Percy | Great Britain | Northumberland | 46%
|
| Torquhil Campbell | Scotland | Argyll | 45%
|
| Torquhil Campbell | United Kingdom | Argyll | 45%
|
| HRH Prince Charles, Prince of Wales | Scotland | Rothesay | 43%
|
| Alexander Douglas-Hamilton | Scotland | Hamilton | 38%
|
| Alexander Montagu | Great Britain | Manchester | 34%
|
| Charles Gordon-Lennox | Scotland | Lennox | 32%
|
| David Carnegie | United Kingdom | Fife | 29%
|
| David Manners | England | Rutland | 27%
|
| Andrew Russell | England | Bedford | 25%
|
| Maurice FitzGerald | Ireland | Leinster | 25%
|
| Charles Gordon-Lennox | United Kingdom | Gordon | 24%
|
| Murray Beauclerk | England | St Albans | 24%
|
| Bruce Murray | Scotland | Atholl | 23%
|
| Charles Gordon-Lennox | England | Richmond | 23%
|
| David Somerset | England | Beaufort | 22%
|
| Richard Scott | Scotland | Buccleuch | 20%
|
| Henry FitzRoy | England | Grafton | 19%
|
| Francis Egerton | United Kingdom | Sutherland | 19%
|
| James Hamilton | Ireland | Abercorn | 15%
|
| James Graham | Scotland | Montrose | 15%
|
| Guy Innes-Ker | Scotland | Roxburghe | 14%
|
| Alexander Douglas-Hamilton | Great Britain | Brandon | 9%
|