Roman structural remains consisting of an east-west line of timber planks, probably originally vertical and supported by timber posts which together with a post and a small pit cut a thick layer of topsoil. The planks may have belonged to a small building, although the limited evidence does not rule out the possibility that they were in fact part of some timber revetment. A daub floor was sealed by an occupation layer, associated with a post-hole, and a burnt layer, possibly a hearth. A tessellated pavement on a sand base was added to the room in the mid 2nd century. These fragmentary remains probably belonged to the rear of a building that fronted onto the Roman street lying beneath St Botolph's Street (CAT Building 178). From re-used 1st century tile found elsewhere at Osborne Street and the limited stratified pottery, a late 1st- or 2nd century date was suggested for the building.<1>