A. M. Allchin, Participation in God: A forgotten strand in Anglican tradition (DLT, 1988) — a recent classic.
Stephen Cone, An Ocean Vast of Blessing: A theology of grace (Wipf and Stock, 2014)
Peter Groves, Grace (Canterbury Press, 2012)
Veli-Matti Karkkainen, One with God: Salvation as deification and justification (Liturgical Press, 2004)
Vladimir Lossky, “Redemption and Deification” in In the Image and Likeness of God (Mowbrays, 1975) — despite the low swipes at the West here, this contains more theology per square inch than almost any other essay.
Marilynne Robinson, Gilead (Virago, 2004) — many of the most evocative discussion of salvation, which take its messiness in a human life seriously, are found in novels, and this (and its successors) is a wonderful example.
Norman Russell, Fellow Workers with God: Orthodox thinking on theosis (St. Vladimir’s Seminary Press, 2009) — accessible introduction to the idea of deification.
John Sanders, No Other Name: Can only Christians be saved? (SPCK, 1994) — Evangelical discussion.
Alan Spence, The Promise of Peace: A unified theory of atonement (T&T Clark, 2006)
Sacramental Theology
Warren Brown and Brad Strawn, The Physical Nature of Christian Life: Neuroscience, psychology, and the Church (CUP, 2012) — a relatively rare thing: theology illuminated with reference to neuroscience.
Andrew Davison, Why Sacraments? (SPCK, 2013) and Blessing (Canterbury Press, 2014)
James K. A. Smith, Desiring the Kingdom: Worship, worldview, and cultural formation and Imagining the Kingdom: How worship works (Baker, 2009 and 2013)
Peter Waddel, Joy: The meaning of the sacraments (Canterbury, 2012)
Historical Theology
David Ford’s The Modern Theologians: An introduction to Christian theology since 1918 (Blackwell, third edition, with Rachel Muers, 2005) led to other edited collections of essays on theologians, organised by historical period: The Reformation Theologians and The Pietist Theologians (both edited by Carter Lindberg, 2001 and 2004) and The First Christian Theologians and The Mediaeval Theologians (both edited by G. R. Evans, 2004 and 2001).
David Bentley Hart, The Story of Christianity: The history of the first 2000 years of the Christian faith (Quercus, 2013)
Tony Lane, A Concise History of Christian Thought (Continuum, 2006) — an excellent introduction.
Diarmaid MacCulloch,A History of Christianity: The first three thousand years (Penguin, 2012)
Robert Louis Wilken, The First Thousand Years: A global history of Christianity (Yale UP, 2012)