The BMVA website is mostly run as a [[http://www.dokuwiki.org|DokuWiki]].  To edit a page, once logged in, use the "Edit this page" link at the bottom left.  To create a new page, navigate to it (e.g. www.bmva.org/mynewpage) and the "Edit this page" link becomes "Create this page".

Some less obvious tasks:
  * If you want to edit the sidebar, it's [[/w/bmva.php?id=sidebar&do=edit|here]]
  * Some of the site look and feel is in a dokuwiki template (lib/tpl/bmva).  Notes on how they work are [[http://www.dokuwiki.org/devel:templates|here]].