A trial-trenched evaluation (24m in total length)was undertaken in May 2008 prior to the design and planning proposal for the extension and enlargement of the existing 'south site' buildings. The evaluation site consisted of an area of hardstanding (currently the service road) extending around the south-western corner of the 1910 college building, and an area of grassy bank to its south. Three trial trenches were excavated (T1 and T2 were small and hand-excavated, T3 was machine excavated).<1> Natural was not identified in T1, the objective being to locate the uppermost significant archaeological horizon (in this case, of Roman date). This was L4, a mortar-rich deposit of Roman demolition material, 1.1m below current ground-level. The sequence was similar in T2, and the uppermost Roman horizon was at 2.55m bgl. In T3, this was at 0.75m at the south end and 1.6m at the north end (substantial deposit of Roman demolition material (L8) which contained mortar, tile, pottery and opus signinum fragments throughout). A north-south profile was reconstructed using the results from all the trenches, and it became apparent that the Roman levels showed no clear evidence of terracing but instead broadly reflect the natural north-south slope of the land today. The finds from the evaluation are dominated by fragments of Roman brick and tile, with lesser quantities of mortar, opus signinum, and tesserae. This material must be derived from the demolition of Roman buildings, and specifically of the Roman building first discovered in 1865 and investigated further in 1910 when the Technical College was constructed. Although two of the trenches (T1 and 3) were cut within the footprint of this Roman building, none of its foundations or floors were seen, because the evaluation trenches were not sufficiently deep. There was also a large volume of Roman material which was residual in post-Roman contexts, notably in topsoil material L3 and redeposited Roman material L5. The highest Roman deposits were rubble or mortar-rich layers dating to the early-mid 3rd to 4th century, when the Roman building was probably demolished. The Roman deposits are sealed by a deep late medieval or post-medieval topsoil, which is itself sealed by soils dumped during the 1980s landscaping.<1>