Walls on line of medieval town walls, including two medieval towers, gazebo, and lime-kiln.

Walls on the line of medieval town walls, including two medieval towers, gazebo, and lime-kiln

These rubble stone walls are partly built on bedrock and follow the line of the medieval town fortifications. The complex extends along the rear of properties on Main Street and includes sections of varying ages and conditions.

The western section comprises the south walls of outbuildings built parallel to the old wall line behind Nos. 87–91 Main Street. A straight joint marks the junction at the right of No. 5 Common Road where a high rubble wall begins, with a door to the right and an access ramp leading up behind No. 87 Main Street. Another straight joint and a low door provide access to the rear garden of No. 89, with a ramp running down to the east. Further doors at lower levels and a window with a brick head at higher level appear in this section, which does not appear on the circa 1865 map.

Beyond this is a nineteenth-century lofted outbuilding (marked on the circa 1865 map) with a corrugated iron roof, a stone doorway at the left, and two windows with brick heads. A ramp runs in front of this building. Its east end gable has a broad entry with a high timber lintel. The building likely has the older medieval wall as its back wall, which continues the line of fortifications further east. High separate stone terrace walls in the steep rear gardens of Nos. 89–91 extend further east to the rear of Tabernacle Chapel.

East of this outbuilding is a wall of stone rubble behind No. 91, which has been broken in the centre for a broad opening; the walling in this area has been much rebuilt.

Behind Tabernacle Congregational Church, the wall continues with a doorway, then an early nineteenth-century lime kiln. This comprises a semi-circular stone projection with recesses on each side giving access to curved pointed kiln-eyes. Behind lies an area of rough ground with shallow caves or quarries. High walls run back to the chapel's south retaining wall. A straight joint appears at the foot of the east wall, followed by a door and a higher section of wall behind No. 93. Rebuilt walling and two further doors appear behind Nos. 95 and 97.

The garden wall to the south of No. 99 Main Street is more substantial and includes a doorway to the left of one of the medieval town wall towers.

A round rubble stone medieval tower features arrow slots on two levels and an overgrown roof, possibly vaulted. This tower is a Scheduled Ancient Monument.

To the right of the tower, behind No. 101, the wall is set back with a stub wall dividing two recesses, the right one roofed as a garage. The stub wall is curved at its south end on the west side. The circa 1865 map shows a building on this site. A garden door to No. 101 adjoins with an earth ramp in front.

More substantial walling continues behind Nos. 103 and 105, where a ramp leads up to a doorway; a further ramp abuts the wall of No. 105. The walling drops considerably in height at the rear of No. 107, where a vehicular doorway with a concrete lintel appears. A yellow brick passage entry to No. 109 Main Street adjoins this section.

The garden wall to the rear of No. 111 Main Street is considerably higher, with a lateral ramp leading up to a stone doorway at the west end.

At this point stands a second Scheduled Ancient Monument: the base of a medieval bastion. It is constructed of rubble stone with a loop on each floor on the south face, an arched door with stone voussoirs to the east, and a loop above. The interior is lined with twentieth-century blockwork.

Built on to the bastion is a gazebo, formerly part of the garden of No. 111. Dating to the later eighteenth century and restored in the late twentieth century (in deteriorating condition as of 2004), it is a two-storey octagon with pebbledashed stone rubble walls, stucco quoins, and window surrounds. An octagonal pagoda roof of shaped slates with a ball finial crowns the structure. It formerly had a wooden eaves cornice, replaced with iron gutters, which were partly missing in 2004. The north, east, south, and west faces contain renewed sash windows—long 12-pane windows in the upper storey and short 9-pane sashes in the west, south, and east faces.

East of the bastion and gazebo, a short length of overgrown high wall extends as far as No. 4 Rock Terrace.