Hello,
The mill in the picture (in the post above) is at Southwell about 2 miles from Upton. It belonged to the Caudwell family from 1851 until it ceased operation in the mid-twentieth century. It is now converted into flats and apartments.
The river Greet which flows from just to the north west of the village of Kirklington (Nottinghamshire) down to join the River Trent at Fiskerton was the motive power for several mills. The first mill on the river was at Kirklington, then Caudwell's Mill at Southwell, after that a mill at Upton and one at Rolleston with the final mill being at Fiskerton within sight of the Trent. The mill at Upton was on the southern edge of the village. Off the top of my head I can't tell you much about the Mill at Upton but I can probably find more information locally.
Regards,
Janeada