An excavation was undertaken by Colchester Archaeological Trust in October and November 2014 at St Helena School in advance of the construction of a new science and technology building. <1> The excavation revealed nine Roman pits, one of which (F1) contained 26 low denomination 1st century AD coins, patches of a compacted gravelled surface (possibly the surface of the temple precinct or temenos) and the cobble and mortar wall foundations of a small internal altar or similar structure. Pit F1 was a very large shallow feature, roughly circular in shape, that was located in the centre of the site. It was initially revealed during the evaluation of the site, when five low denomination coins were excavated from it. <2> The pit was fully excavated during the most recent phase of work and a further 21 coins were recovered. The coins are probably part of a hoard, although they were distributed throughout the feature rather than clustered (as one might expect from a hoard deposit). It is possible they represent a disturbed hoard that came to be included in F1 after its primary deposition elsewhere. As well as coins, pottery dating from the Iron Age to 2nd/3rd century pottery, animal bone, glass, pottery, pieces of pegtile and brick were present within the feature. Pit F10 was a relatively small circular pit, which contained late Iron Age/early Roman pottery, roof tile and a copper alloy coin. Gully F8 was a small linear feature with was aligned N to S. It contained no finds. Pits F9 and F6 appeared to predate the gravel surface. Pit F9 contained pottery of predominantly mid-late 1st century date, roof tile and a copper-alloy belt pin. Pit F6 contained early-mid 1st century pottery, roof tile and animal bone. Pits F2, F3 and F12 all seem to post-date the gravel surface of the precinct. Pit F2 contained pottery of a mid to late 1st century AD date, a large quantity of roof tile in its upper fill, an Icenian copper-alloy brooch and some glass. Pit F12 contained pottery of a largely mid to late 1st century AD date, as well as tile, a coin of Vespasian and animal bone. Two sections of wall foundation were also excavated. F4 was located in the western part of the site in the soakaway excavation. It was a short straight stretch of cobble and mortar wall foundation which orientated roughly north-south. Some roof tile was associated with this feature. F11 (plate 4) was located on the central part of the northern site boundary. It was largely constructed of septaria and was orientated roughly north-south, similarly to F4. Roughly 3m of wall foundation was visible as F11, which turned through a right-angle at about its halfway point. F11 was associated with a large dump of tile and CBM (L6). It is thought that F11 possibly represented the remains of a shrine or internal feature of the temple precinct. A trial trenched evaluation was carried out in 2013 (CAT Report 699). <2>