iSpot! Learn more about wildlife, share your observations with a friendly community and get help identifying what you have seen.
Bird song identifier / recordings www.xeno-canto.org plus code to embed the recording in your blog posts.
Wild Flower Identification
Flower guide A colour-coded guide to the 65 species in the Plant Life Common Plant Survey (pdf)
Identify wild flowers – Botanical Society of the British Isles
British Lichens Fantastic site for identification go to Picture Index
Insects and Spiders
Steven Falk has probably the best online insect photographic collection www.flickr.com/photos/63075200@N07/collections
BioImages The virtual field-guide (UK)
Not the most user friendly but very comprehensive and a fantastic resource.
iPhone and iPod touch apps,
Isoperla Apps for Tree identification, Bird identification and Bird Song identification plus Orchid and amphibian identification.