Fr. Louth's collegiate education was at the Universities of Cambridge and Edinburgh where he studied Mathematics and Theology and prepared his thesis which concerned Karl Barth. After graduation he taught early Christian theology and patristics in the University of Oxford and early Medieval and Byzantine history Goldsmiths College in the University of London.
Fr. Louth has been Professor of Patristic and Byzantine Studies at Durham University since 1996. He teaches courses on the history and theology of the Christian Church: an undergraduate module dealing with the impact of the rise of Islam on mostly Greek Christianity in the eastern Mediterranean and a Master of Arts module on the understanding of what it is to be human in early Christian theology.
His interests in research lie mostly in the history of theology in the Greek tradition, especially in periods later than what is usually studied in the universities of England; that is, after the fifth century during the period of the Byzantine Empire to 1453. He is also interested in later periods including the modern period; that is the nineteenth century and later, where his research includes Russian and Romanian Orthodox theology.
- Louth A 1996. Maximus the Confessor. Routledge x+230
- Louth A 1997. 'St. John Damascene: Preacher and Poet' in Preacher and Audience: Studies in Early Christian and Byzantine Homiletics ed. Pauline Allen and Mary Cunningham. Brill: Leiden 247-66
- Louth A 2000. Many chapters in Patrologia V. Padri orientali dal Concilio di Calcedonia (451) a Giovanni Damasceno (d.750), ed. Angelo di Berardino. Marietti, Genoa 75pp
- Louth A 2000. Wisdom of the Byzantine Church: Evagrios of Pontos and Maximos the Confessor. 1997 Paine Lectures in Religion 45pp
- Louth, A. 2002. St John Damascene tradition and originality in Byzantine theology. Oxford: Oxford University Press.
- Louth, A. 2005. (i) 'The Eastern Empire in the Sixth Century' (ii) 'The Byzantine Empire in the Seventh Century'. In The New Cambridge Medieval History: Volume 1, c.500-c.700. Fouracre, P. Cambridge: Cambridge University Press. 1: (i) 93-117 (ii) 291-316.
- Louth, A. 2004. Light, vision and religious experience in Byzantium. In The presence of light divine radiance and religious experience. Kapstein, Matthew. Chicago: University of Chicago Press. 85-103 .
- Louth, A. 2004. The ecclesiology of Saint Maximos the Confessor. International journal of the study of the christian church 4(2): 109-120.
- Louth, A. 2007. Greek east and Latin west the church AD 681-1071. New York: St Vladimir's Seminary Press.