At Leeming, ATC had a 'bomber box'. They were briefed shortly after we arrived by the Ops Pilot to repeat the Bomber Controller's message exactly [on pain of death or worse]. We even gave them example messages to help them get it right. As soon as the Bomber Controller uttered a word, they broadcasted it no matter what was going on. It didn't half p*ss of the locals in the circuit!
I did Micky Finns and Micks in the sixties, and Micks in the seventies and eighties. Ex Mick could be used by a single Sqn doing a dispersal exercise... 'Attention, attention, this is the Bomber Controller for Leeming only, readiness 05 is now in force. For Leeming only, readiness 05 is now in force. For Leeming only, readiness 05 is now in force.' And every minute - 'For Leeming only, readiness 05 is now in force' [30 secs for readiness 02]. When the whole practice was ended, the reversion to readiness 15 was accompanied by an authentication code which the crews had to match with sealed cards before reverting. And once they didn't, which caused a huge embarrassment... [but that's another story!]
ISTR that Exercise Edom was for real QRA only.