Westfield Farm Chalk Bank is a designated Site of Special Scientific Interest (SSSI) based in Berkshire near Eastbury. It is located within the North Wessex Downs.
The site is 35.25 acres in size. The site is best described as lowland Calcareous grassland The bank is North facing.
In 1990 the site was designated a site of special scientific interest (SSSI).
The site has the following Flora: