Section excavated by the Archaeological Research Group under the direction of Mr J. Blythe. The section was dug ahead of the construction of an extension to the Telephone Exchange (Telephone Managers Office). The section was dug across the north-south Roman street which runs between Insula 10 and 11. A vaulted tile/masonry drain was found to run along the roads west side.<1> This was flanked on the west by masonry foundations which overlay burnt clay walls, probably of Claudian date. <2> A letter dated 8/10/1963 gives permission to Mr Blythe for the Essex Archaeological Society to help in the NCP car park excavations (see EVT3138). A letter dated 14th/10/1963 from D. T. D. Clarke asks Mr Blythe to cease his current excavations. In reply Mr Blythe wrote on the 19/10/1963 that he had recorded the exposed remains and backfilled the trench. <3> The remains are shown on a plan of the site. <4> Crummy states that 'in 1963 the Archaeological Research Group under the direction of Mr J. Blyth found in Insula 10 a deep north-south ditch filled mostly with clean sand and sealed by a layer of Boudican destruction debris'. <5> See also EVT125.