Thanks Richard,
I wasn't sure about the French Roundel size, I have since found a photo of the SO 30 Nene and it had square wingtips and civilian registration.
There was a Canadian Lancaster used to test the Orenda but no Maple-Leaf in the Roundel. So possibly the Lincoln RA716 Avon Test bed ??
Can't find any "natural metal" photos of the Lincoln test bed and as Richard said, the wing panels look right for the Lancastrian and RR is correct in saying that there were probably a lot of minor variations and the roundels were no doubt often repainted (and the blisters may have healed up!!)
Last edited by SincoTC; 20th Mar 2010 at 13:23.