Cotswold Water Park
Offers a guide to the recreational facilities and visitor facilities in and around the 40 acre park, with information about the Cotswold Water Park Society, a charity working to improve the park for people and wildlife.
Harnham Water Meadows Trust
Established to manage the meadows as a surviving part of the irrigation system once widespread across the Wessex chalkland, consistent with the requirements of an SSSI. Offers a detailed guide, with information about their education programme, events, news, and links.
Wiltshire Astronomical Society
Provides information on meetings and observing sessions. Contains a newsletter archive, photo gallery, image processing application systems, and an "Ask an Expert" page.
Wiltshire Wildlife Trust
A conservation charity working to preserve the wildlife, biodiversity, and unique habitats of the county; includes details of membership, their projects and educational activities, and volunteer opportunities.