Yeah, sure, depends from the fate of the Through Deck Cruiser. If nothing changes bar Hermes not being a commando carrier, then the Task force sailing to the Falklands is similar to OTL - Ark Royal + Hermes.
Except that Hermes still has it catapults. Sea Vixen are gone, and if Phantoms are too difficult, then pass them to RAF as per OTL. What really matters is to keep a squadron of Buccaneer on board, and mix that with Sea Harrier for air defense. And of course, Gannet AEW, three of them would be enough.
That's how I saw it.
Two huge advantages for the Task Force
- the Buccaneer is a far, far better bomber than the Sea Harrier or Harrier Mk.3. Anti-radar missiles included, to wreck the radar covering Port Stanley airfield.
- the Sea Harrier is not only free for air defense, BUT can be guided by Gannet AEW.
And this is HUGE bonus: probably 90% of the RN OTL ship damage and losses vanish and gone, because the Skyhawks and Mirages are tracked by Gannets and intercepted far, far away from the fleet. Instead of short-sighted radar -borne ships.