Harrison's Mill Long Sutton · Lincolnshire · England

Harrison's Mill stands on Roman Bank at Long Sutton. It was built for Charles Treffitt in 1843 as a red-brick tower windmill. The tower is six storeys high, with door and window openings arranged around the elevations. The mill is recorded as a tower corn mill and historic photographs show it as a six-sailed Lincolnshire mill.

The mill's Roman Bank location places it within the South Holland fenland landscape, where tower mills processed grain for agricultural communities. Its later history followed a common pattern of loss of working function but retention of the tower. The mill survived as a substantial brick structure and was later converted for domestic use. A 2011 photograph described the old mill tower on Roman Bank, while other views identified the building as Harrison's Mill.

Harrison's Mill is protected as a Grade II listed building. Together with Brunswick Mill, it preserves the unusually strong visible survival of Long Sutton's nineteenth-century tower-mill landscape.