Newton's Astronomical Society
- Group open to everyone interested in astronomy, space and related subjects; meets in Sir Isaac Newton's birthplace. Includes membership details, meetings and events schedule, and background information.
- http://www.newtonsas.org.uk/

Grantham On Line
- Information about the area including accommodation, attractions, local news, events, community information and local businesses.
- http://www.grantham-online.co.uk