In addition there were also two mills listed, and both of these would have been water-powered. There are still references to one of them in the road name Mill Lane which runs along the River Ivel. However the mill has since been replaced by housing. Further down the river from the site where the mill once stood is Sandye Place Academy where it is believed there was a Danish camp which was built to protect the Danelaw in 886. Evidence at the Riddy, a local nature reserve just south of Sandy, shows that mill-building has taken place on this site since at least the time of the Norman era, though the last mill was built here in 1857.