Good thread, I've found myself answering some questions by reading it.
I actually logged on this morning to post a related question concerning "callsign only". I don't fly in the big cities often (I'm more of a country boy), so "callsign only" isn't something I'm asked to do very much.
I know it's semantics, but is the correct phraseology for a "callsign only" contact:
"Stansted, CLB 123"
.... or just: "CLB 123"?