Two large post-Roman ditches, F44 and F9, were parallel with (and to the north of) the town wall on an east-west alignment.<1>

The earliest of these, F44, was over 3m wide (the southern edge was located outside of the excavation area) with a flat base. The ditch had three distinct fills: a stony silt on its northern edge (L14), a highly organic silt similar to peat in the base of the feature (L13) and, overlying these, a layer of sandy silt containing frequent mortar and building material (F20). The later fill of the ditch (F20) contained peg tile. However, pottery fragments recovered from L13 and F20 date the initial infilling of this ditch to around the 13th-14th century.

A second ditch was dug on the same alignment, with its northern edge 300mm south of the northern edge of F44. This ditch (F9) had a U-shaped profile with a flat base once again attributable to the solidity of the layer onto which it was excavated (L9). The ditch F9 had a soft loam fill with a high organic content. Late medieval pot and peg tile was recovered from the lower fill and post-medieval pot and slate from the upper fill.