Mark Webb Photography
British Dragonfly Society
Recorders Of The Avalon Marshes
The Royal Society for the Protection of Birds
Somerset Wildlife Trust
SWT has many reserves across the county encompassing multiple habitats.
The best of these for dragonflies are the 2 in the Avalon Marshes, Westhay and Catcott Nature Reserves.
There are many others, so please check out details for each reserve and see if they are of interest for dragonflies.
Click on their logo to open their website.