I went along to this at the Novotel in Hammersmith. The majority of exhibitors were selling frames and print services, but I saw some really good demonstrations of Nik's Viveza, On One's Mask Pro and Animoto.
I bought Viveza and Define (academic versions), which were massively reduced, and took out a subscription to Animoto, who gave me 15 months for the price of 12.
The Animoto software is just what I was looking for to create promotional videos for when my website goes live. It will save me alot of time and technical expertise!