None of those. Sorry, probably too difficult for many folks, need to be at least in your early/mid fifties to remember this:
Garry Halliday
1959 to 1962. Master aviator. Superb stuff! I remember it vividly - compulsory viewing every Saturday afternoon post-
Grandstand. Think: Biggles but without the camp suggestion, constantly pursued by arch-villain, master criminal
The Voice - heard but never seen by the protagonists (seen by the viewers though). Think: Blofeld in horn-rimmed glasses, infinitely
more evil and without the cat.... you get the picture. I was desolate when the series was axed - possibly to clear the decks for
Doctor Who which took the same slot the following year - possibly because sadly the
Voice actor fell ill and died the same year: they used a stand-in for a few episodes but it wasn't popular.
As for my erstwhile colleague: a striking resemblance in looks, but more significantly in that all-important voice. Imagine a soft, musical but slightly sinister Welsh lilt. You've got it.
Sorry, hijacked this thread a bit, but happy reminiscences for me. TV was worth watching in those days.