An archaeological strip-and-map operation was maintained during levelling work for a new sandschool on land to the north of Ashurst Farm, Plumpton, East Sussex. No archaeological features, deposits or finds of note were recorded. Topsoil stripping revealed the earthworks on site to represent the remains of an equestrian arena, dating to the second half of the 20th century. The building debris used in its construction is likely to have concealed an 18th century pond at the east end of the site.