A watching Brief of groundwork’s associated with the installation of a new surface water drainage system at Broughton House, Fronting Monastery Street (NGR 61538 15781), was undertaken on 01 April 2007. The new surface water drainage system had been designed to run above the existing foul water drainage system so that groundwork’s would be limited to previously disturbed ground.
Medieval masonry wall- Part of a north-east to south-west aligned wall (5027 and 5028), constructed of flint and chalk in a mid yellow orange sandy mortar was exposed at the base of the drainage trench. The wall survived at a depth of 0.44 m (+12.38 m OD) below the existing ground surface and had a visible length of 1.5 m and had a surviving width of 0.42 m.
The wall perhaps represents an adjacent structure abutting the precinct wall. Early documentary sources provide no evidence for properties fronting the precinct boundary along Monastery Street. (1)

<1> Canterbury Archaeological Trust, 2009, Archaeological watching brief and recording brief at The King's School, St Augustine's Abbey, Canterbury: Assessment Report (Unpublished document). SKE16012.