how do you figure RJAF is a civil reg?
I am not as that was the callsign not necessarily the reg and as she is/was civil registered as G-XMHD up to Feb 2016, just asking the question.
Would seem a touch cynical to stop it flying on the civil register then allow the same airframe to fly in UK airspace if the registration has been changed to a foreign one, the CAA website doesn't state transferred to the RJAF, so it would be interesting to know if it was returned to a military airframe again under the RJAF just to get around the grounding of civil Hunters ?