Donald Maclean
The core five members were Kim Philby, Donald Maclean, Guy Burgess, Anthony Blunt, and John Cairncross, though debate continues over whether additional members existed. Donald Maclean entered the Foreign Office in 1935 and served in Paris, Washington (as First Secretary with access to atomic energy discussions), and Cairo before becoming head of the American Department in 1950.
If you're learning about this topic for the first time, these are the best places to continue — documented evidence and historical relationships are the guide.
Donald Maclean is documented in the evidence record of this published dossier.
Co-documented with Donald Maclean in 1 published dossier, including “The Cambridge Five”.
Co-documented with Donald Maclean in 1 published dossier, including “The Cambridge Five”.