Also was surprised that here controllers are posted in one job and there they stay. I would have thought they would work their way up starting at tower then approach then area, but no, where they start is where they stay.
Yes and no. Speaking for myself only (non-NATS ATCO) here, I have worked at an A/G airfield, an AFISO airfield and 4 full ATC airfields (including one military), all in uncontrolled airspace in the UK. In the future, I hope to gain a radar rating to add to tower and procedural.