N face of Clayton Wall from the junction with the field wall at NY77416841 to the butt end of the Wall at NY77906858. Length 539m, the condition of the Wall ranges from poor at the W end to good at the E end, with a distinct change in the type of masonary coming at about 304m, from roughly cut irregular stones to regular courses with dressed stones. 1: 30m, 2 Roman courses, bulge at 9m, 14.7m, top course loose. (Clayton Wall Survey œ F10). 2: 30m, mostly rebuild but up to 2 Roman courses in places, bulge at 2m-4.5m, 7.7m, 20m, 30m. (Clayton Wall Survey œ F11). 3: 30m, possible Roman footings, bulge at 12.4m, 14.4m, 22m, 29m, collapse at 11m. (Clayton Wall Survey œ F12). 4: 19.5m to bend, mostly rebuild, bulge at 10.5m (Clayton Wall Survey œ F13). 5: 30m, 1 Roman course, bulge at 8m. Condition - moderate. (Clayton Wall Survey œ F13, F14). 6: 30m, footings only Roman, 14.8-19.4m footings project 0.25m, bulge at 15.5m, 19.3m. (Clayton Wall Survey F14, F15). 7: 30m, footings only Roman, bulge at 11.6m, 16.8m, 18.6m, 25.9m. (Clayton Wall Survey F15, F16) 8: 30m, 2 Roman courses in places, bulge at 6.7m, 10m, 15.7m, 19.8m, 27.3m, slump at 14.2m. (Clayton Wall Survey F16, F17). 9: 30m, 2 Roman courses at places, short section of rebuild only 4 courses high, bulge at 0.2m, 8.7m, 11.3m, 21.4m, collapse at 16m and 28-30m. Possible W facing stepped offset at 14.8m (Clayton Wall Survey F17, F18). 10: 30m, 3-4 Roman courses with crumbly mortar, bulge at 4.7m, 12.4m, 27.5m, collapse at 9.2m. Regular courses start at 14m. (Clayton Wall Survey F18, F19). 11: 30m, up to 3 Roman courses with loose, crumbly mortar, bulge at 1.7m, 23.1, 28.6m, stone missing at base of Wall at 10m. (Clayton Wall Survey F19, F20). 12: 30m, 1-2 Roman courses with loose mortar, bulge at 6.4, 15.8, where the bulge pushes out 1 Roman course, 24.4m, 27.2m. (Clayton Wall Survey F20, F21). 13: 30m, footings only Roman, bad bulge at 29-30m, imminent danger of collapse. (Clayton Wall Survey F20, F21) 14: 30m, 2 Roman courses, bad bulge as above 0-1.3m, then good condition. (Clayton Wall Survey F21, F22). 15: 30m, 2 courses Roman with some crumbly mortar, turf cap in good condition. (Clayton Wall Survey F22, F23). 16: 30m, 2 Roman courses with some crumbly mortar, bulge at 8.8m, 15.6m, 19.4-25.1m - bulge pushes out top Roman course, 29.4m. (Clayton Wall Survey F23, F24). 17: 30m, 2 Roman courses with MINISTRY OF PUBLIC WORKS CONSOLIDATION at 26.1m, hard grey modern mortar. (Clayton Wall Survey F24, F25). 18: 30m, rebuild continues to 12.6m, turf cap in good condition. (Clayton Wall Survey F25, F26) 19: 10m to butt end of Wall, slight inward collapse at 8.3m. (Clayton Wall Survey F26).