Or more specifically, the sheet that Scale Aircraft modelling did when it was under the fine helmsmanship of Sir Neil Robinson. There were lots of options for the F21 on it hence why I'm after it. IIRC, there were several F21s, an F.IX, an F.XVIe and an F22.
TIA
I think I missed them myself. If there is a second copy of that sheet going I bags it !! A copy of the article that depicted the aircraft would be nice as well.
Gondor