A reform of defence policy by the Secretary of War Viscount Haldane in 1905 resulted in all 13 centres being declared redundant, and both forts were sold back to the estate trustees in 1908. Both forts are protected by a Scheduled Monument listing. The National Trust owns the Box Hill Fort and a metal grill has been placed over the entrance to allow bats to access to their roosts. The Betchworth Fort is in private ownership and is not accessible to the public.