The CAA Centre (a TLTP 3 project)
although now finished, this has produced a number of useful resources. Sadly the most valuable, the "Blueprint for Computer-assisted Assessment" by Joanna Bull and Colleen McKenna is no longer available on-line, but a revised version is due to be published by RoutledgeFalmer in September 2003
The link address is:
http://caacentre.lboro.ac.uk/resources/