This is a general mathematical congress arranged by the mathematical societies of Denmark, Finland, Iceland, Norway, and Sweden as well as London Mathematical Society and Edinburgh Mathematical Society.
There will be 11 main speakers at the congress each giving 50 minutes talks in the morning sessions. In addition there will be 7 parallel special sessions each afternoon. The main speakers and the programs of the special sessions are announced here: http://www.math.uio.no/2009/scientific/. Also mathematicians outside Britain and the Nordic countries are welcome to attend.