A watching brief was maintained during the excavation of trenches for an extension at the north-west corner of the Conservative Club which revealed a north-south wall foundation constructed mainly of mortared septaria with occasional tile fragments in the west face. To the east of the foundation was a thick clay loam deposit assumed to be make-up associated with the wall. The wall and clay deposit appear to be Roman and perhaps marks the western boundary of the temple precinct. The eastern part of the clayey deposit was cut by a large feature with sloping sides, possibly the castle bailey ditch. A clay layer of similar appearance was noted at the south-west corner of the site where it was present to within 0.4 m of the modern ground surface.<1>