Which missing British design files historians most want to find

If one box of lost British defence plans could be recovered, which projects should it contain?

The panel prioritizes unresolved capital-ship and carrier conversions, naval aircraft studies, and experimental armored-vehicle projects that survive only in fragments.

The answer begins with missing naval plans that could resolve disputed armament and conversion questions. Admiral-class carrier studies and an angled-flight-deck adaptation of the Malta hull would show how far British carrier thinking advanced beyond the ships actually built. Other choices include the Son of Tomcat studies and an attempted naval fighter adaptation known mainly through references rather than full drawings. The discussion extends to armored-vehicle files, where records of a Churchill gun carrier tested with a 32-pounder could reveal how one-off trials were engineered and evaluated.