In 1979 The Canterbury Archaeological Trust excavated upon the site of the current 18-20 Marlowe Arcade. This was in advance of redevelopment of the site. The sitecode was MIII. Two sunken floor structures, dating to c.450-700 AD, were then found on the south side of the Roman street (structures S13, 14). Structure S13 was built first and S14 built shortly after it was demolished. A later structure dating to c. 550-650 AD (S15) was then built within the shell of the Roman building R26, it cut through decay levels and onto the opus signinum floor of the caldarium. A hoard of Theodosian coins were found within the structure. Various pits and post-holes contemporary with, and later than, the structures were also seen.
During the period 850-1050 a clay lined cellar was built within the palaestra of the Roman baths. It was found in a good state of preservation and had been use between c. 925-75 AD.

In April 1957, 4 trenches were excavated by the Canterbury Excavation Committee on the site of the current 10 Rose Lane. A single Anglo-Saxon pit was also uncovered it had been largely destroyed by a late medieval pit, but it yielded several sherds of Late Saxon pottery and a bun shaped loom weight.

Blockley, K., Blockley, M., Blockley, P., Frere, S. and Stow, S., 1995, Excavations in the Marlowe Car Park and Surrounding Areas. Part 1: The Excavated Sites (Monograph). SKE29969.