Sites of Special Scientific Interest (England)

Sites of Special Scientific Interest (England)
Alternative Title

Dataset Language

A Site of Special Scientific Interest (SSSI) is the land notified as an SSSI under the Wildlife and Countryside Act (1981), as amended.
Sites notified under the 1949 Act only are not included in the Data set. SSSI are the finest sites for wildlife and natural features in England, supporting many characteristic, rare and endangered species, habitats and natural features.
The data do not include "proposed" sites. Boundaries are generally mapped against Ordnance Survey MasterMap. Attribution statement:
© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right [year].
Topic Category

Keyword Value: Environment, LandUse, OpenData
Originating Controlled Vocabulary: GEMET - INSPIRE Spatial Data Themes (GEMET)
Originating Controlled Vocabulary Citation: 2008-01-01
Temporal Extent

from -1970-01-01 to -2099-12-31
Dataset Reference Date

Date:2017-09-14 -2021-04-15
Date Type: publication, revision

All data is captured to the Ordnance Survey National Grid sometimes called the British National Grid. OS MasterMap Topographic Layer ? produced and supplied by Ordnance Survey from data at
1:1250, 1:2500 and 1:10000 surveying and mapping standards - is used as the primary source. Other sources ? acquired internally and from external suppliers - may include aerial imagery at resolutions ranging from 25cm to 2m, Ordnance Survey 1:10000 raster images, historical OS mapping,
charts and chart data from UK Hydrographic Office and other sources, scanned images of paper designation mapping (mostly originally produced at 1:10560 or 1:10000 scales), GPS and other surveyed data, and absolute coordinates.
The data was first captured against an August 2002 cut of OS MasterMap Topography. Natural England has successfully uploaded an up-to-date version of OS MasterMap Topographic Layer.
However, we have not yet updated our designated data holding to this new version of MasterMap. This should occur in the near future, when we will simultaneously apply positional accuracy improvement (PAI) to our data.

Vertical Extent

Spatial Reference System

OSGB36 - National Grid of Great Britain
Spatial Resolution

Resource Locator

Resource locator
protocol: WWW:LINK-1.0-http--link
name: ArcGIS Open Dataset record page
description: ArcGIS Open Dataset record page
protocol: DSP:ESRI
name: SitesOfSpecialScientificInterestEngland_Download
description: Sites of Special Scientific Interest (England) Download
protocol: WFS
name: SitesOfSpecialScientificInterestEngland_WFS
description: Sites of Special Scientific Interest (England) WFS
protocol: WMS
name: SitesOfSpecialScientificInterestEngland_WMS
description: Sites of Special Scientific Interest (England) WMS <\dd>
Layerfile for use by HCC internal staff:\\geodata\NatEng\SSSI
Responsible Organisation

Natural England
Role: Resource Provider, Custodian, Owner, Originator, Point of Contact, Processor, Publisher, Author.
Limitations on Public Access

There are no public access constraints to this data. Use of this data is subject to the licence identified.
Use Constraints

Open Government Licence
This data is supplied without guarantee or any warranty as to the accuracy, currency or completeness, and is provided as is, excluding any warranties of any
kind, either express or implied, to the fullest extent permitted by law,including (but not limited to) satisfactory quality or fitness for a particular purpose.
Additional information

Resource Identifier


Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council
as regards interoperability of spatial data sets and services.
Re-designing HCC Data for INSPIRE not done
Equivalent scale

Bounding box
-6.41736, 2.05827, 55.7447, 49.8625
Quality scope
Spatial representation type

Character encoding
Data quality
Maintenance information
maintenance and update frequency:Monthly
update scope:
maintenance note:
Metadata update date
Metadata Language

Metadata Point of Contact

Natural England
Role: Resource Provider, Custodian, Owner, Originator, Point of Contact, Processor, Publisher, Author.
Resource Type

6 Dataset
File Identifier
Hierarchy level name
Parent identifier
Metadata standard name

Metadata standard version
Review date
Name Long Name Description

OSGB36 National Grid Bounding Coordinates

West: 486000 East: 552000 North: 245000 South: 189000
More Information

Change History