WE Branch
Using that logic we only need two CV's then we need only two Trident replacement SSBN's and can reduce all the navy new builds to Two units per each forecasted operational requirement. With the planned build of units to support and protect one of the two CV's they may build the CV will never be able to leave home waters if faced with anything other than a terrorist threat as the CV and Support Train cannot be protected without landbased A/C cover. I am not sure the Crabs can provide that now let alone in 2020.
WALOB
BobH