And thinking that it would be nice to have a picture of the same aircraft prior to hostilities I found this one.
All 12 aircraft - though one is taking the picture - so there only 11 in the shot!
But still even in a peacetime situation, when people have plenty of time to paint and get things spic and span, you can see all the pattern variability again, although to a lesser degree then in the photo in the post above.
I do know that when repainting the aircraft, the roundels helped to ensure slightly better pattern line-ups.