Of course we are all assuming that GB plc does not have a fire-sale and retrenches to an island state. Suppose we do pull out from wars of choice and determine that wars of need in other parts of the world are not our concern, then what?
While accepting that a proper carrier is of major strategic importance, if we decide that we shall reduce our profile on the world stages then we could do away with the carriers, reduce the capability of our frigates and do away with our destroyers.
While not being an advocate of the Typhoon, it may be the better weapon for a reduced island policing role.