A watching brief was maintained by M Dover of SCAU, for Southwark DAC. The unrendered greensand stone fabric of the church wall was exposed, together with the foundations for four buttresses. One of these appeared to be contemporary with the construction of the church, with the two others being later brick built features. The date of the fourth buttress was unclear, but possibly thought to be a rebuild or repair of an original feature. The remains of a possible shed or lean-to structure were encountered, together with a post-medieval brick drain-cover and a rough rubble foundation of ambiguous date.