Cambridge Astronomical Association (CAA), Founded in 1959 for people with an interest in astronomy in and around the Cambridge area. Monthly meetings are held at the Institute of Astronomy, Cambridge.
Cambridge University Astronomical Society (CUAS), founded in 1942, they are a group of students and members of the university from many different backgrounds who share an interest in all topics related to astronomy.
St. Neots Astronomy Association (SNAA), founded (?). Members meet monthly at the Visitor Centre, Little Paxton Pits Nature Reserve
Sawtry Astronomical Society (SaAS), formerly Sawtry and District Astronomical Society -appears to be defunct.