Hi Brooke,
Other than the Duke of Edinburgh, the following I have identified as WWII veterans (though I imagine there are many more but because their profile is somewhat less there is nothing online about their service):
Alun Arthur Gwynne Jones, Baron Chalfont b. 1919
George Hugh Boscawen, 9th Viscount Falmouth b. 1919
Nathaniel Thomas Allen Twisleton-Wykeham-Fiennes, 21st Baron Saye and Sele b. 1920
Sir Leslie Lynn Marr, 2nd Baronet b. 1922
Pamela Sharples, Baroness Sharples b. 1923
Andrew Douglas Alexander Thomas Bruce, 11th Earl of Elgin and 15th Earl of Kincardine b. 1924
Edmund Oslac Ironside, 2nd Baron Ironside b. 1924
Anthony Martin Grosvenor Christopher, Baron Christopher b. 1925
Thomas Edward Graham, Baron Graham of Edmonton b. 1925
John Christopher Loder, 3rd Baron Wakehurst b. 1925
Michael Sydney Cedric Brudenell-Bruce, 8th Marquess of Ailesbury b. 1926
David George Coke Patrick Ogilvy, 8th (or 13th) Earl of Airlie b. 1926
Sir John Alexander Noble Graham, 4th Baronet b. 1926
Including the DofE, that's 14, but there must surely be at least a few dozen others.
Thanks,
James