In January 1978 The Canterbury Archaeological Trust excavated within 28 St Margaret's Street, prior to the loweriing of the cellar.
Following the clearance of the old cellar foundations and a number of Medieval rubbish pits, an intact deposit of black loam was discovered. This is likely to be related to a period of abandonment, post-dating Roman activity and pre-dating Saxon settlement. The loam contained late Roman pottery.
Beneath the loam was a sequence of burnt clay floors which may possibly be associated with a stoke-house for a heated Roman building. In one small area the floors were removed. These sealed a thick demolition deposit consisting of decomposed mud walling and painted plaster. Beneath the demolition level was a clay floor and the remains of a narrow mud wall, rendered on both sides with white painted plaster. The wall was probably a partition wall of an early Roman building.

Tatton-Brown, T., 1979, Other Sites, Interim Report on Excavations in 1978 by the Canterbury Archaeological Trust (Serial). SKE30705.