The area of Northiam SSSI is 3,000.0 square meters.
The area of Moorlinch SSSI is 2,260,000.0 square meters.
The area of Perch SSSI is 721,000.0 square meters.
The area of Writhlington SSSI is 5,000.0 square meters.
The area of West Moor SSSI is 2,130,000.0 square meters.
The area of Holly Lane SSSI is 5,000.0 square meters.
The area of West Hoathly SSSI is 6,600.0 square meters.
The area of Turners Hill SSSI is 1,600.0 square meters.
The area of South Exmoor SSSI is 31.327 square kilometers.
The area of Weston-in-Gordano SSSI is 125,500.0 square meters.
The area of Ham Green SSSI is 11,000.0 square meters.
The area of Rodney Stoke SSSI is 696,000.0 square meters.