Speake was subsequently an academic publisher for forty years. His publications include the Penguin Dictionary of Ancient History (1995) and the two-volume Encyclopedia of Greece and the Hellenic Tradition (2000). In 1996, he was elected Fellow of the Society of Antiquaries of London.[2]
Among other positions, he also worked for twelve years as a guest lecturer on Swan Hellenic Cruises. In 1988 he visited Mount Athos for the first time, to which he subsequently made frequent pilgrimages.[1]
Speake, Graham (2018). A history of the Athonite Commonwealth: the spiritual and cultural diaspora of Mount Athos. New York. ISBN978-1-108-34922-2. OCLC1041501028.{{cite book}}: CS1 maint: location missing publisher (link)
Gothóni, René; Speake, Graham (2008). The monastic magnet: roads to and from Mount Athos. Bern: Peter Lang. ISBN978-3-03911-337-8. OCLC230209474.
Conomos, Dimitri E.; Speake, Graham (2005). Mount Athos, the sacred bridge: the spirituality of the Holy Mountain. Oxford: Peter Lang. ISBN3-03910-064-5. OCLC67924540.