Mappp v2. To see all of the English Sites of Special Scientific Interest (SSSI) in an interactive map, together with over a million words of searchable description go to Mappp.co.uk
Uses an interactive Leaflet map of UK to highlight the geology, landscape and wildlife (really good!!).
Open Government Licence
© Crown copyright. All rights reserved. Joint Nature Conservation Committee Support Co (2015)
© Crown copyright. All rights reserved. Natural England 
Contains Ordnance Survey Data. Ordnance Survey Licence number 100017955. Crown Copyright and Database Right (2011)