WEBF - get over it! We don't face any threats now from hardware heavy attacks from other nation-states. There is too much democracy around, and too much interlinked commercial interest for the UK to ever enter again into a full on war against a nation-state which is going to threaten our frontiers. Glibly announcing that we "must learn from the lessons of history" is akin to arguing that the Lancashire Yeomanry should be well armed in case those narrow-minded heathen child-burning bigots from Yorkshire ever invade again.
The RN should accept that it will never again have a globally capable surface fleet and instead concentrate resources on its globally capable bombers and UK coastal surveillance/maritime patrol. Ideally give up the ludicrous solitary & unaffordable carrier and instead trade for long-term control of a new maritime surveillance aircraft fleet to support the bombers.