Havergate Island, together with the National Trust managed Orford Ness site is a designated national nature reserve. The island is also included in the Alde-Ore Estuary Site of Special Scientific Interest (SSSI); the Alde, Ore &amp; Butley Estuaries Special Area of Conservation (SAC); the Alde-Ore Estuary Special Protection Area (SPA); the Alde-Ore Estuary Ramsar Site site; the Suffolk Coast and Heaths Area of Outstanding Natural Beauty (AONB); and the Suffolk Heritage Coast area.