There have been quite a few threads about these things in the past.
Personally all the usual suspects are there.
The same old seminars. They don't change that much. There is always a pilot shortage looming. There will be lots of graphs of projected airframe sales by various manufactures and then some other colour full charts next to that which will try and make you believe that most of the current pilots are going to retire next year and now is the time to train.
If your in London already I suppose it's worth going to but take a huge bag of salt with you and every time you speak to someone that wants to put a positive spin on the next couple of years take a huge pinch of it. If your going to have to pay 100-200 to go to it you would be better doing an hour in an aircraft.
If you do go please post back and let us know what the current spin is by the schools.