Slow Flyer, well done!! Thanks Wayne.
A good answer and solving the mystery.
And the new A27 - do you know why it is called a Hawk 127 ?
BAE Systems were coming up with a specific designator for this 100-series Hawk, I think Hawk 115 had been allocated already to the Canadian NATO model. BAE Australia reported back to Warton that the RAAF had just allocated the 'A27' serial designator to the new trainer (about 1996 timeframe), so BAE in UK said: well then, Hawk 127 it is!