Holmes S The Wondrous Cross. Atonement and Penal Substitution in the Bible and History, London, Paternoster, 2007
Jeffrey, S., Ovey, M., & Sachs, A., eds., Pierced for our Transgressions: rediscovering the glory of penal substitution, Nottingham: Intervarsity, 2007
Barrow, S., & Bartley J eds., Consuming Passion: Why the Killing of Jesus Really Matters, London, DLT, 2005
Hilborn D.,Thacker J., Tidball D., eds., The Atonement Debate: Papers from the London Symposium on the Theology of Atonement, Michigan, Grand Rapids: Zondervan, 2008
Mann, A., Atonement for a Sinless Society, Carlisle:Paternoster, 2005
Terry, J., The Justifying Judgement of God: A reassessment of the Place of Judgement in the Saving Work of Christ, Nottingham, Paternoster, 2007
N T Wright on PFOT Fulcrum
Recommended by Bishop Alan - thank you:J. Denny Weaver The Nonviolent Atonement (Eerdmans 2001)
I'll send off to Amazon for 'The Nonviolent Atonement' and also J. Goldingay's Atonement Today: A Symposium at St. John's College, Nottingham, London: SPCK, 1995
In the light of the question:
'To what extent can a coherent defense be made of penal substitution in the face of contemporary criticism?'
is there any other reading, you learned people out there can recommend?