In June 1940 the Sunderland flying ship in which he was being transported beached near Malta to avoid sinking.
[3][clarification needed] Clifford was a friend of Daily Express correspondent Alan Moorehead; they both covered the Spanish Civil War, and first met in the 'Bar Basque' in Saint-Jean-de-Luz in 1938).
According to one writer, "Moorehead and Clifford were complementary opposites, professional rivals as well as friends.
"[5] Moorehead's memoir A Late Education: Episodes in a Life is, amongst other things, the story of his friendship with Clifford.
Richard Knott's book The Trio (2015) is an account of Clifford's work as a war correspondent and his friendship with Alan Moorehead and Christopher Buckley.