Fosters Mill is an historic grade 2* listed windmill in Cambridgeshire on the edge of the Fens. Built in 1857, it sits on the site of an earlier post mill.

The Doomsday Book makes reference to two mills in what is now Swaffham Prior, so perhaps the mill sits on a site where milling has taken place since 1066! The present mill, an excellent example of a country tower mill was built by local millwrights Fysons of Soham. In 1900 it is said you could see 40 windmills from the top of Fosters Mill - drainage mills on the surrounding fenland and corn mills such as Fosters Mill. The mill worked with its sister mill (literally across the road and still standing) although for much of its working life, it produced animal feed. The mill worked until 1946 when the then miller, Sidney Foster hung up his boots. It was rescued in 1971 and following a lengthy period of restoration commenced working again in 1992. 

The present owner, Jonathan Cook bought the mill in 1998 and since this time, it has been a commercial working windmill producing a range of organic flours from local wheat, rye and spelt grains. The mill has two excellent pairs of French Burr stones driven solely by wind power which make superb flour and is registered with the Soil Association as an organic producer.