Souldern Mill is on Ockley Brook about west of the village. The oldest known record of it is from 1279. By the latter part of the 17th century there were two mills, but the second mill did not survive. The mill was independent of Souldern Manor, and being on the county and parish boundary with Aynho it may have served both villages. It may be the mill that was referred to as "Aynho Mill" in 1797. A watermill between the two villages was still working in 1920.
