Nothing to "get over" G-UK.
I'm
surprised that the enthusiast final flight, for an aircraft which has spent all its operational life at LGW and MAN, would be from and to BHX.
I don't get the argument of "showing off" the new hangar to the public either; people booking this flight will be doing so for the Airbus A306, not particularly to see a new hangar and many will have been round Luton or Manchester hangar facilities on previous enthusiast flights anyway; a hangar is a hangar, is a hangar...
If feedback is genuinely being sought, then I would suggest the flight is arranged around MAN and/or LGW and leave the "look at our new hangar" for another occasion.