IMHO I would argue that not building the carriers/selling them, and spending the money on 13/14? well financed Typhoon squadrons, MPA, more A400s, whatever you would spend the money on, would provide much more power projection capability than 2 lumbering, unprotected turkeys with 6 un-serviceable and still developmental jets on them that have bankrupted us for the pleasure of their company.
There could come a time when the various tin-pot nations in an area of strategic interest to the UK make it awkward to overfly, let alone land and 'project power'.