At the very beginning, James walks through a ramp of airplanes. Some of the yellow Tiger biplanes have American registrations, the N number, on the side of the plane. It might be possible that the producers called for people to ship their planes over to Britain for the series, although crating them and shipping them would be expensive and one would expect these planes to be plentiful in the United Kingdom. The blue plane is the British licensed Aeronca C-3 airplane, one of the first private planes for the masses before the Piper Cub. It flew on just 37 horsepower and was known as the "Flying Bathtub" by many. The Aeronca company continued to make popular planes until 1951.
What is played on the radio at the Drovers is the actual Christmas 1940 address to the nation by King George VI.
In what has become tradition for the annual Christmas show, the regular opening title and credits illustrations, showing the green Yorkshire countryside, are snow-covered, and there are bells accompanying the regular score.