Looking at some images of the royal aero club there was one of Roy in front of a Comper Swift VH UVC
this aeroplane was restored recently in New Zealand and shipped back to Sydney
There was some damage on transit and the aeroplane has been repaired at Luskintyre
The log book shows Roy flew it quite often and a friend who is now dead spoke highly of him and his abilities
photes to follow when I can find them but Geoff goodalls site has some of them