The Ending SPOILERS of course
I don't get the rocket in which lived Number One was apparently living, and from which he was operating. When the Prisoner expels Number One from the rocket's upper control room, Number One simply runs away chattering. We never see him again. We don't know where he went or where he may be hiding, or if he evacuated the Village along with everyone else.
At first I thought that his rocket might be a nuclear-tipped missile, but there's no hint of that. The Village is evacuated - however, presumably because of the explosion and flames of the lift-off, and because Number One has been removed from his control position, not because it's a nuclear danger. The rocket itself simply takes off, it doesn't explode, and the camera doesn't follow it either to a terrestrial target or into space. We don't know if Number One lingered somewhere inside the rocket, and we don't know who remains on it when it blasts off - except, of course, for the "crew and staff" members whom McGoohan, Kanner, Muscat and McKern have knocked out or otherwise incapacitated.
So the Village disperses in panic, bereft of its Number One and his rocket-residence. But the question still remains: what happened to Number One?
Obviously, since we are to identify with the Prisoner, and we see that at least part of him is Number One, then of course, we can conclude, "Yes, we all have a Number One within us, to a greater or lesser extent". That of course suffices for the moralizing lesson it is meant to be, but still, the actual figure of Number One haunts nearly every episode as a dark presence, and as an active character who makes phone calls to the Village control center, and issues orders to the Number Twos and other higher-ups. So I don't feel that my question is particularly thick-headed or naive. I think McGoohan as dramatist should have showed, or at least strongly implied, the final demise of THAT Number One - the Number One of the Village, because it was THAT Number One who was not only Number Six's tormenter, but also the nemesis of every one else in the Village, whether they were known or unknown to the viewer.