List of biodiversity conservation sites in the United Kingdom

This article provides a list of sites in the United Kingdom which are recognised for their importance to biodiversity conservation. The list is divided geographically by region and county.

Inclusion criteria
Sites are included in this list if they are given any of the following designations:

Sites of importance in a global context
 * Biosphere Reserves (BR)
 * World Heritage Sites (WHS) (where biological interest forms part of the reason for designation)
 * all Ramsar Sites

Sites of importance in a European context
 * all Special Protection Areas (SPA)
 * all Special Area of Conservation (SAC)
 * all Important Bird Areas (IBA)

Sites of importance in a national context
 * all sites which were included in the Nature Conservation Review (NCR site)
 * all national nature reserves (NNR)
 * Sites of Special Scientific Interest (SSSI), where biological interest forms part of the justification for notification (SSSIs which are designated purely for their geological interest are not included unless they meet other criteria)

Sussex
Rye Harbour Nature Reserve

Shetland

 * Unst

Outer Hebrides

 * Lewis and Harris
 * North Uist, South Uist and Benbecula