A watching brief was undertaken by during foundation work for a new classroom (the north class base) in 2012 identified a Roman ditch and a large modern pit. <1> Monitoring visits were made at regular intervals to observe and record the excavation of the class-base foundations, and the associated reduction of site levels. The foundation trenches (0.60m wide and 1.20-1.40m deep) were excavated through the playground surface (tarmac), which sealed a loosely-consolidated asphalt layer which was evidently an earlier playground surface (L1). L1 sealed well-compacted hardcore and crush sub-base (L2). At the west end of the foundation trench, an accumulated layer (L3) sealed natural clay and gravel (L4). At the east end of the foundations, L3 had been removed the modern sub-base directly sealed the natural. Archaeological features were confined to the western west end of the foundations, and consisted of a Roman ditch F1 (aligned E-W), and large pit F2. Ditch F1 contained two sherds which have been dated by Stephen Benfield to the 2nd century AD. Pit F2 contained large quantities of modern-looking ash, clinker and coal.