Homeguard, I'm not entirely sure of your point. Isn't this thread about Zone infringements? You seem to be referring to take off clearances
How can "G-xx cleared for take off wind 240/12?" be ambiguous?
Perhaps the phrase; "expect your routing to be" and "you are cleared to" would be less ambiguous. It would also then become; "after departure your routing will be" followed by; "you are cleared to take-off".
Are you referring to clearances on the ground or in the air?? Or both......can you be a little less ambiguous
??
Rod - I have experienced considerable irritation from Pilots when I try to get a formal readback!! Clearances are supposed to be read back in full (including the full callsign as ThePirateKing correctly points out). The most common omissions are usually the level restriction (VFR) and the QNH. If I don't get a decent readback I threaten to cancel their clearance - it usually has the desired effect
