The problem is that the CAA doesn't appear to let out their database in a "database" form; they let it out only as a raster image.
Not so. The airspace data is in the AIP and publicly available. The base map is copyright Ordnance Survey, and like all mapmakers they guard their copyright. They even include "false" information in maps that would not be shown up by a survey of the ground, enabling them to prove in Court that their work has been stolen.
Centrica, owners of the AA, settled out of court for 20 million pounds when caught nicking data, details
here.