I was reading your summary about Vyachaslev Molotov and it reminded me that, while walking around Emmock woods one day early in the war, my father and I saw a large plane land at Tealing aerodrome (Handley Page Hereford?). My father at that time worked for WP Robertson who provided chauffeur-driven hire cars/taxis in the city.
Next day, on return from work, he announced that the company had provided a car to transport Mr Molotov from Tealing to the railway station. We worked out that the large transport aircraft we had observed landing was most likely the one carrying Mr Molotov.