Walls from N of churchyard of Church of Saint Mary to Barnard's Tower

Rubble stone walls of various dates forming part of the historic fortifications of the town, running from north of the churchyard of the Church of Saint Mary to Barnard's Tower.

North of Saint Mary's churchyard, the walls include a ramp providing rear access to Nos 6-10 Main Street (Somerfield's), with a step outward to the rear wall and a straight joint to a 3 metre square section. One section of approximately 15 metres has collapsed, followed by some 9 metres of roughcast wall to the rear of Nos 12-14. The roughcast section sits on bedrock with rebuilt outside steps leading to the garden of No 16. A high wall on a grass bank to the left is ivy-clad and steps forward for approximately 9 metres before a ramp leads to a garden gate. Beyond this are about 5 metres of high wall, then lower wall for 4 metres, mostly a roughcast retaining wall. A step out of some 2 metres leads to a run of approximately 10 metres with a blocked door on the right. A further projection of about 4.5 metres extends for 6.5 metres before a return of 7 metres behind Nos 24-26, which includes a blocked doorway in its east return. A long stretch of undulating rubble wall, partly on bedrock and some 51 metres long, curves forward in a quadrant, continuing another 34 metres to a broad ramp ascending to a break at Morgan's Way (between Nos 50 and 52). A double barbican tower, probably of the 17th century, is shown on this section in Buck's engraving of 1748.

East of Morgan's Way, rubble wall—partly ivy-clad and irregular behind a ramp—contains a door raised some 27 metres from Morgan's Way. The wall then deteriorates, becoming lower over a considerable length with some sections missing, before a 4-metre projection occurs behind No 74 and a garden door to that property. In the gardens of Nos 64-72 to the south runs a stretch of retaining wall halfway down. Further doors in the main wall to the west, which is high from approximately the rear of No 82 and not a retaining wall, run some 80 metres before dropping down again to a low wall and curving sharply back onto a rocky overgrown bank behind Nos 6-14 East Back. Below this, a low section of partly collapsed rubble wall skirts the north edge of the wooded bank behind the Baptist Chapel and St. Michael's Church.

From a point north of St. Michael's churchyard eastwards to Barnard's Tower, the remains of the town walls form a Scheduled Ancient Monument. The walls here are partly rebuilt or repointed, running to a curved projection behind No 110 before an access ramp to Blackhorse Walk. This section features some arrow-slits and various small square openings, possibly put-log holes. A projection of about 3 metres is followed by two outside ramps and then a small round tower with splayed base and arrow-slits.

Beyond Blackhorse Walk, a raised terrace of approximately 29 metres leads to Barnard's Tower, with a high retaining wall on the back behind Nos 120-122 and a rubble stone restored parapet on the retaining wall on the other side.

Barnard's Tower is a circular corner tower with a square entrance tower projecting to the west. It has restored flat parapets with drain holes. The entrance tower contains an entrance at upper level from the raised terrace, reached by a flight of eight rebuilt curving steps leading up to a tall segmental-pointed doorway with stone voussoirs. Two small square holes sit above on either side, and two loops occupy the upper level, with the parapet considerably higher on the right. The north side of the entrance tower has a flat parapet continued from the west side, a loop at upper level (entrance level from the terrace) and two square drain openings with stone sills above.

The main round tower features a splayed high basement and main chamber at upper level. Long loops occupy each floor on the northwest side, with small loops at intermediate levels to the right in the angle to the entrance tower. The north side has a long loop to the basement and a pair of lancets above with stone voussoirs and a relieving arch over. Small square drain openings with stone sills sit below the high flat parapet. The northeast side has a long loop to each floor. The entrance passage is stone vaulted and formerly had a gate and portcullis, with a door on the right, portcullis slot and splayed reveal to an arrow-slot on each side. A segmental-pointed part-blocked entry leads to the round tower's upper chamber. This room is stone vaulted and contains a fireplace and latrine shaft.