I’m surprised the triple RFS Liberator crashes in August/September 1941 haven’t been discussed here (or have they?).AM261 hit high ground on Arran (10AUG), AM260 crashed on take-off at Ayr(14AUG) and AM915 hit high ground near Campbeltown(1SEP). Were any procedures or organizations changed as a result?
Curiously Jack Bamford in his book ‘Croissants at Croydon’ describes AM260 as the first RFS Liberator and flown down from Prestwick to Heston with a Spitfire escort for conversion by Airwork at Heston. He records its first trip back over the Atlantic was from Squires Gate as the Prestwick runway wasn’t ready. Has Bamford got it all wrong?

Neutral ships from South America could presumably access the Mediterranean ports to deliver raw rubber, ( e.g. Lisbon, Barcelona, Marseilles Genoa) in the early war years….as the USA approached war Brazil was leaned on to abandon links with the Axis powers, I don’t know if any other countries retained such links

Stepwilk’s original post omitted Bill Lear’s Learstar project…presumably the idea germinated after his historic flight to Moscow in a Cessna 310 for the Tushino Air Show 1956 ( 1st US private aircraft visit post war) making the US corporate warbird conversion scene very much a late 1950s/early1960s phenomenon so contemporary with the Gulfstream 1. The Lockheed twin warbirds were basically converted airliner designs anyway.With its fatter fuselage the Martin B-26 must have been more suitable for business conversions than the Douglas B-26 and there were a couple of early Martins converted….Lear must have moved on to the Learjet project about 1962.
BOAC used converted Hudsons in WWII so certification would have not been too difficult but it seems none were done postwar.The Percival Prince picked up a few corporate orders but as said the DH Dove got most. David Brown reportedly used his Dove from his Aston Martin factory at the small grass Hanworth airfield for direct overseas flights as late as 1956

Last BAC-111 rearstairway I remember using was a European Air Transport flight Manchester to Pisa ca. 1992…here’s a shot from February 1973 🙂 http://www.airliners.net/photo/Germanair/BAC-111-524FF-One-Eleven/1159031/L