I don't accept it is more expensive to build in series rather than than together and none one here has provided any logic to suggest otherwise. When questioned I did.If you didn't mis-quote me then why are you at last acknowleding what I've said in the paragraph below?
The RN Could not afford the carriers no matter which way they were ordered, you can either order then both at once which means more expense now but less overall or order them one at a time which costs less up front and more overall, either way it doesn't matter, they still haven't got the money.
It doesn't even matter if they are the best or not either, the argument is irrevelevant because CVF could of been new build Invincible's and the RN couldn't of afforded them either.
The only way new aircraft carriers become affordable is if the MOD budget is increased now, or you invent a time machine and convince the Government to increase the budget when business is booming; around 2004 when all the cost overruns with Typhoon, Astute, MRA4 etc are known about. Because that is what needed to happen to stop this current mess the MOD is in. While you're at it you can convince all the politicians to stop burying their heads in the sand about how much it costs to build things in this country, until that happens the MOD budget will never be under control.
This is all in the past (but relevant for the future) however I have always acknowedged that other areas also needed to be address in the RN: T45/Astute/Assault Fleet. Mind my answer to these is the same, they were all built to close together.