Why did the Royal Navy retain STOVL aviation?
Short answerTreasury arguments, interoperability with the Royal Air Force, and concern that another F-35 variant would threaten funding for Eurofighter and the future Tempest programme influenced the choice.
NotesBritain's continued use of STOVL aviation reflects political and institutional choices alongside technical requirements. Interoperability with the Royal Air Force made the capability easier to explain to the Treasury. A different F-35 variant could have looked, in Treasury terms, like a naval challenge to Eurofighter and the future Tempest program. The carrier solution therefore emerged from decisions made across services and over decades, rather than from a launch-system comparison in isolation.