MathematicsUniversity of Leeds School of Mathematics
Liverpool University Mathematical Sciences
University of Warwick Mathematics Institute
London Mathematical Society
American Mathematical Society
arXiv Preprint server
Mathworld A huge collection of information on maths
The Journal of Singularities Top singularity theory journal
GeometryA ruled surface sculpture A surface I spotted in Rio de Janeiro
Julian Beever's pavement drawings Pavement drawings from an interesting perspective
Bathsheba Grossman Maths and other sculptures
Random Thoughts from a Random Fellow Includes online sing surf drawing package
More to follow! I am adding them as I need them.
HumourDilbert Modern management antics.
Basic Instructions You will learn!
xkcd A webcomic of romance, sarcasm, math, and language.
BooksLeeds University Library
Alibris Second hand books
Abebooks Second hand books
LiteratureIain M. Banks
Neal Stephenson and an older site.
Maths TalkMy talks for schools
Other SitesTED Great video lectures - far better than TV. Don't know where to start? Try the shambolic genius of Lennart Green or see Tom's hand in JJ Abrams's talk.
Flickr Interesting photographs
National Train Timetable
John Peel Sessions, Festive 50, etc.
Be a genius Improve your mind
New Scientist Top science magazine
Local docs Local access only
Bad Astronomy An excellent site and excellent book. See also the author's blog entry on Science Fare. Sums it all up!