As for alltitude reporting, if the passing level is not given in the initial contact then you DO NOT HAVE A RADAR SERVICE.
Rubbish. The only thing that determines whether an aircraft is getting a radar service is whether the controller says RADAR CONTROL/RADAR ADVISORY/RADAR INFORMATION SERVICE, perhaps but not necessarily preceeded by a request from the pilot. No amount of pushing buttons on the aircraft, saying where you are or your level or hoping someone is watching you does it!
At least that's the way it's supposed to work in the UK.