Excuse me for butting in on a pilot forum guys, but I get foreign pilots (especially southern european) who question my 'two' and 'three'. Then Brits on the frequency start doing it as well!
And I know it sounds a bit 'estuary english' but as an ATCO I'd prefer to be able to use 'Free' rather than 'Tree'.
BTW, I'm from Belfast and work at BRS.
Sorry, off back to the ATC forum again.
