Seaford Head is classed as a Nature Reserve because it encompasses so many valuable conservation habitats. It stands on one side of one of the last remaining undeveloped river mouths on the South Coast, Cuckmere Estuary. It is home to many nationally rare and significant species of plant, birds and insect, providing visitors with a great conservation experience, together with peaceful walks with stunning views of the Seven Sisters Cliffs and the Cuckmere River Valley.
The Nature Reserve is in the Sussex Downs Area of Outstanding National Beauty and the Sussex Heritage Coast, and has also been declared a Voluntary Marine Conservation Area and a Site of Special Scientific Interest.