Lelley Windmill Elstronwick · Yorkshire · England

Lelley Windmill was built in 1790 for the miller Peter Sumper. Its broad splayed brick base may pre-date the present tower and may have formed part of an earlier eighteenth-century post mill. The tarred brick tower was probably built from within the structure, with most of the mill machinery installed at the same time or shortly afterwards.

During the early nineteenth century the tower was raised to six storeys, creating a second stone floor and increasing the sail height. One millstone carries a maker's plate for Robert Nutt of Hull. In 1873 an ancillary steam engine was installed, and by the mid-1890s oil-engine power was being used to drive two pairs of four-foot stones for flour and grist.

The mill later fell out of use and became derelict, but it was not stripped for scrap. The tower retains its timber sheer beam frame, wind shaft, floors, upright shaft, wallower, great spur wheel, millstones, tuns, hoppers, tentering gear, governors, flour-dressing machinery, grain bins, sack-hoist arrangement, and other process equipment. The cap, sails, and fantail are missing, but the cap frame, cast-iron wind shaft, Lincolnshire cross, and neck bearing remain.

A brick engine-room annexe, chimney, and mid-to-late nineteenth-century vertical steam boiler also survive beside the tower. Lelley Windmill is Grade II* listed.