Your link didn't work, but thanks for the information!
Happier days!
Britain was building new roads, airports were expanding, virtually all the cars in the film were British-made, passengers were well-dressed, the ground announcements were made by young ladies who spoke English correctly, the in-flight catering was top notch (a 4-course meal to be served at 20000 ft or so over Europe....) etc etc.
Compare that with the 'delights' of travelling today....