We also popped over to the Discovery Museum, just up the road where there were a few more events happening. I haven't been before and had a lot of fun looking around the various bits, especially the Science Maze. At the back of the science maze was a workshop where you could make a "throwie" - an LED taped to a battery and some magnets, for throwing at fridges and things, and then a darkroom with surfaces to throw them in.
Later on there was an appearance by the "robot" Titan. He arrived, and stood up ... I was astonished to see a walking robot (walking is really tricky), especially since his shoulders seemed very large - and in the next heartbeat I realised it was a man in a grey plastic suit. There's a few photos though on my flickr stream along with a few others from the day.
All in all I am very excited to see something like this happening in the UK and am on the look-out for the next event of this kind.