Pi Mu Epsilon
- http://www.pme-math.org/
- Honorary national mathematics society promoting scholarly activity in mathematics. Includes links to chapter websites and membership information.
The Archimedeans
- http://www.archim.org.uk/
- Cambridge University Mathematical Society, open to anyone in Cambridge with an interest in mathematics. Meetings, member services and lecture notes.
The Trinity Mathematical Society
- http://www.srcf.ucam.org/tms/
- Society intended principally for members of Trinity College Cambridge, with the aim to promote the discussion of subjects of mathematical interest. Includes events calendar, membership information, and talks archive.