Nice you brought up the Twin Pioneer again
JW411. While the Caravelle mystery is still waiting to be solved here are three photo's of the Nepalese Government a/c that staged through Sharjah(9N-RF6 & '7' in June 1965 and '8' in July) Thought they may interest you and the 152/B flt members.
Prestwick eh? Visited there in the early '60's and remember the Canadian A.F. Sabres and CF-100's dismantled behind the hangars. The second and only time I visited was when I was a PAX on a Bassett from Wyton to collect some spares from Scottish Avn. While pilot and nav went off to get said spares - I went off to the hangars to have a 'nosey' around. Found them full of Canadian A.F. CF-104's!
Sorry, I too went off on a bit of a 'drift!'
Here are my photo's at last, Sorry for the wait, had to have a quick "refresher course" on how to upload them!!(Just noted this post is numbered '666'....................)