Research and analysis

D2b: Condition of Sites of Special Scientific Interest in England, 2016 to 2025

Updated 14 April 2026
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year methodology condition percentage
2016 Unit assessment Favourable condition 38.5
2017 Unit assessment Favourable condition 38.67
2018 Unit assessment Favourable condition 38.71
2019 Unit assessment Favourable condition 38.89
2020 Unit assessment Favourable condition 38.74
2021 Unit assessment Favourable condition 38.28
2022 Unit assessment Favourable condition 38.23
2023 Unit assessment Favourable condition 36.85
2024 Whole feature assessment Favourable condition 40.02
2024 Unit assessment Favourable condition 35.47
2025 Whole feature assessment Favourable condition 40.98
2016 Unit assessment Unfavourable recovering condition 57.27
2017 Unit assessment Unfavourable recovering condition 56.03
2018 Unit assessment Unfavourable recovering condition 55.5
2019 Unit assessment Unfavourable recovering condition 54.64
2020 Unit assessment Unfavourable recovering condition 54.07
2021 Unit assessment Unfavourable recovering condition 52.87
2022 Unit assessment Unfavourable recovering condition 50.8
2023 Unit assessment Unfavourable recovering condition 49.13
2024 Whole feature assessment Unfavourable recovering condition 21.67
2024 Unit assessment Unfavourable recovering condition 48.81
2025 Whole feature assessment Unfavourable recovering condition 21.07