No Pr00ne...
During the Falklands conflict, Both Sea Harrier sqaudrons were boosted in size by drawing aircraft from storage and from 899 NAS. The Pilot numbers were boosted by using pilots from 899 as well as pilots who were employed on non flying posts. The same could be done today....and there are Sea Harrier drivers in the RNR air branch.
As for the tankers bit, read BEagle's posts on the tanker thread(s).
In late 2001, US carrier based aircraft relied heavily on land based tanker support, including RAF Tristars and VC10s. Yet it was still more effective to base them aboard carriers, rather than trying to find land base. A tanker usually has a longer range than a fighter, so land based fighters covering a group of ships at sea reqiure more tankers support than carrier based ones which do not have to transit from their base to the area of operations.