Bristol Astronomical Society (BrisAS), founded (?). Members (120 – 2018) meet weekly at Unit 13, Montpelier Central, Station Road, Montpelier, Bristol (BS6 5EE) and observing session at the sociey’s Failand Observatory at Failand, Near Wraxall (BS8 3US).
Cam and Dursley Astronomy Club (CDAC), founded 2010. Group appear defunct since Spring 2017.
Cotswold Astronomical Society (CAS), founded in 1981, its first meeting was held at Churchdown near Cheltenham in Gloucestershire to encourage astronomy, for both beginners and the more experienced. The members (150-2016) meet at Shurdington Social Centre, Cheltenham (GL51 4TB).