Russian historian medieavilist, Russian lector at Cambridge. He left Russia with his parents after the revolution in 1919. He lived in Estonia. He graduated from the Philosophy Faculty of Charles University in Prague (1927-1931), and in 1933 received his doctorate in philosophy. He worked in the Archaeological Institute of the N.P. Kondakov as a head of the library, academic secretary, and in 1939-1945 - director. Professor. In 1945 he was arrested, spent two years on remand in Soviet prisons in Germany. After his release, he lived and worked in Berlin. In 1948 he was invited to teach at the Slavic Department, University of Cambridge. In 1965 participated in the Youth Congress of Russian Student Christian Movement (RSCM) in Bievre (dep. Essonne). Made a presentation to the Union of Russian Writers and Journalists in Paris at the meetings of the memory A.M. Remizov (1968), L.N. Andreeev (1969), A.I. Kuprin (1971), etc. He published "Studies in Muscovy: Western Influence and Byzantine Inheritance". The author of many works on Russian history and literature, memoir, "What comes to mind" (Tallinn, 1996). Published in the journal "Numbers", "New Journal", "Rebirth," "Faces," "Memoirs of the Russian Academic Group" (USA), the newspaper "Russian Thought" etc. He was married to Jill, daughter of Sir Hubert Jervoise Huddlestone (1880–1950), army officer and colonial administrator.

Naturalisation Certificate: Nikolay Andreyev. Of no nationality. Resident in Cambridge. Certificate BNA37856 issued 20 June 1955.

“ANDREYEV, NIKOLAY. Emeritus Reader in Russian Studies, Cambridge University. On February 25th, 1982, suddenly at his home. Dearly beloved husband of Gill and father of Katya, Jervoise and Michael.” (The Times (London, England), Friday, Feb 26, 1982; pg. 22; Issue 61168.)