Beautiful Britain
Beautiful Britain has many interesting articles and sections and is well worth a visit (screensavers, wallpapers, jigsaw puzzles, how to make nest boxes, how to install miniature cameras in next boxes, wildlife gardening and much much more).
UK Butterflies
UK Butterflies is the best butterfly site I have found on the web! If you're interested in every detail of UK butterflies, then this site is a must.
Reticule
Reticule contains in-depth details about British flowers that can be accessed via an identification questionnaire. It contains several other sections relating to wild flowers (including "Recommended books" and "Glossary").
British Garden Birds
Dedicated to helping garden birdwatchers in Britain and Ireland to identify and enjoy the birds that visit their gardens, and to understand the birds' lives and behaviour.
English Country Garden
A fantastic site with information and photographs of the flora and fauna found in an English Country Garden.
UK Phenology Network - Nature's Calendar
An excellent website about Phenology. There are several sections to this site, including a section where you can record your findings and help determine if our seasons are changing due to climate change.
William A. Bolton Photography
An excellent website with many professional photographs to view and purchase.
Peter J Hosey Photography
Another excellent website with many professional photographs to view and purchase (flowers, fungi, landscapes and more).
UK Moths
An excellent website dedicated to the moths of Great Britain and Ireland. A must visit for anyone interest in moths.
Froglife
Froglife is a national wildlife charity concerned with the protection and conservation of amphibians and reptiles in the UK. It has many interesting articles on amphibians and is well worth a visit.
Royal Entomological Society
The aim of the society is "the improvement and diffusion of entomological science". They have many interesting articles about entomology including how to create an insect friendly garden.
Dean Birders (Disabled Forest of Dean birders)
Birdwatching information, gallery, and daily photo reports from the Forest of Dean in Gloucestershire, England maintained by and for disabled and housebound birdwatchers.