The only reason we are having this discussion is one thing - we cannot afford it! Sadly, the politicians have never grasped the fact that we are no longer the leader of an empire.
If you really want to have power projection, then go look at the US and see what is required.
These carriers should never have been ordered - it takes money away from capabilities we really need - such as MPA!
I am fed up with the political excuses - this is all about saving pennies when pounds are really needed.