New Bloke,
I don't mean any offence by this but if you used to fly at North Weald and didn't know what a Run and Break was and heard people call initials but didn't know what that meant - Did you not ask someone what it was all about?
BTW I agree with your point about a run and break being an unusual practice (I wouldn't say non-standard) so if airfields permit R&B's maybe they should include the details of the procedure in the TAP. And as I said earlier where is the harm in learning an extra procedure which gives you an alternative choice of an approach, you can never stop learning in this game.