Turnpoint seems to be a new venture by a few well known people in the industry. I'd personally go to some of the open days of some of the Flight Training Organisations (who do sim trips too) and potentially "Flyer Live" at Heathrow first to get a feel. £200 seems a bit steep for a careers day for new wannabes in my opinion but could be very useful for those at a more advanced stage.
Also especially if you're straight out of school get flying and just get the bug, get involved with the Air League, get involved with your local flying/gliding club, get a flying scholarship. It'll do you wonders and give you connections and skills no careers day can match.