Why are UAVs not already replacing retired British carrier tankers and airborne-early-warning aircraft?
Short answerThey may eventually fill both roles, but carrier trials are only beginning and an operational squadron remains much farther away.
NotesTanker and airborne-early-warning missions are plausible destinations for uncrewed carrier aviation. The constraint is maturity: Britain is still discussing early carrier trials, while an operational squadron will take much longer than the first flight. Western acquisition programs specify the systems they want and accept a longer development cycle. Ukraine fields whatever is immediately available because an active war leaves less room for that process.