An archaeological evaluation, comprising five test-pits (three c.4 x 4m and two 6 x 6m in area), was carried out by Colchester Archaeological Trust in 2017 at the former Bus Depot, Queen Street.<1> Test-pits TP1-TP3 were excavated inside the bus depot building and revealed significant modern, post-medieval and Roman remains c.0.45-0.5m below current ground level. Modern wall foundations and demolition debris was associated with the Theatre Royal and its destruction by fire in 1918, and post-medieval remains consisted of two large pits and a ditch. The ditch is probably part of the Royalist defensive position behind the town walls during the English Civil War. Roman remains included two possible phases of Roman street/road metalling, a small section of the Roman rampart, and a mid-late Roman ditch cut through an earlier pit and posthole. Test-pits TP4-TP5 revealed modern and post-medieval layers to a depth of c.1.25-1.65m below current ground level, underneath which were significant Roman structural remains. Hull's 1931 archaeological trench was identified cutting through both test-pits. TP4 revealed a tile-lined Roman drain, aligned NNW to SSE, which probably branched-off from Hull's E-W tile-lined drain (located immediately to the south of TP4). One of the Roman wall foundations identified by Hull was also located in TP5 (F2/F4). In addition were two possible floor layers (L15 and L17) and other surfacing material (L11-L13).