Hampstead Scientific Society
The Hampstead Scientific Society (HSS) in north London was founded in July 1899 as the Hampstead Astronomical and General Scientific Society by P.E. Vizard. It aims to be inclusive, promoting and nurturing an interest in all branches of science, while catering for wide levels of knowledge, from layman to expert alike.
Source: Wikipedia — Hampstead Scientific Society (CC BY-SA 4.0)