The Australian Register of Living History Organisations
This has links to all the other groups in Australia, as well as medieval gear suppliers. There's also a callendar of upcoming events. It's a must see for every medievalist, and if you're wanting to join a group, this is the place to look.

The Vikings
A British mob.

Regia Anglorum
Another British mob.

Netserf: the internet connection for medieval resources.

The Viking Gallery: Professor Dan Carlsson's viking CDs are available online.

The Online Medieval and Classical Library
A great site with translations of all kinds of historical documents.

UK Museums on the web

The British Library online

BBC History

Period Provisions

Historical Recipes of Different Cultures

Medieval/Renaissance Food Homepage

Foodbooks.com

Chess Variants from which I stole a whole lot of our game book