An archaeological watching brief at 107 High Street (the Conservative Club), Colchester, Essex: June 2006

Six trial holes/boreholes were dug in and around the exterior of the Conservative Club as part of a structural investigation into movement of the building. The survey confirmed that the building overlies the fill of the castle bailey ditch and that this is the cause of the subsidence. At its deepest point, the ditch was approximately 5.25m deep. A profile of the ditch was constructed using the borehole data.