Just got home from doing the "biker down" course at the Wiltshire air ambulance base, I honestly can't recommend it enough, it was a good informative evening and Dean and Fred are very good at getting the point across in a way where the important information sticks in your head, I hope I never need to use what I learnt tonght but it's in there if it's needed.
if you've not done the course then book it, it's free and could save a life.