It would appear that the scheme we know is now defunct.
The Air cadets web site says this:
http://www.raf.mod.uk/aircadets/what...holarships.cfm
There are several scholarships available to air cadets each year. These are sponsored by the Royal Aero Club, the Air League Educational Trust, the RAF Charitable Trust, the Geoffrey DeHaviland Foundation, Babcock Defence Services, the RAF Association and the Guild of Air Pilots and Air Navigators.
The RAFA Scheme (mentioned above) shows one place for 35 hours and 4 runners up with 12 hours:
https://www.rafa.org.uk/wp-content/u...Conditions.pdf