Species identification guides

NatureSpot
Field Studies Council ID Resource Finder
Steven Falk Flickr ID guides
Eakring Birds
iSpot Keys
BioImages
UK Safari
Royal Entomological Society Out of Print Handbooks

Richard Comont Blog
Online Keys
Database of Insects and their Food Plants
List of National Schemes
SEWBReC YouTube Playlists
Pl@ntNet – plant identification from your images
ObsIdentify – Recognize nature in one click!

For more in-depth species identification guides, see the complete list on the SBIS website