The defence estate is divided as training areas & ranges (84.0%), research & development (5.4%), airfields (3.4%), barracks & camps (2.5%), storage & supply depots (1.6%), and other (3.0%). These are largely managed by the Defence Infrastructure Organisation.
Try to answer this question if possible (otherwise reply "unanswerable"): What percentage of research and development is managed by airfields?
unanswerable