I note that BBC is showing the Michael Powell/Emeric Pressburger 1946 film "A Matter of Life and Death" at the weekend, It's often shown but is worth watching again from time to time as it's one of the most imaginative films ever made.
A few bits of trivia about the film.
It was released in the States as "Stairway to Heaven" (the Led Zeppelin song of that name has no connection wwith the film).
It's use of colour for the scenes on Earth and back and white for the afterlife scenes is in contrast to that used in "The Wizard of Oz", sepia for the scenes at home and colour for the Oz scenes. Incidentally, although the afterlife scenes are shown in black and white, the film was shot with technicolour stock but those scenes were processed to be black and white.
It was the film debut of Lois Maxwell (not credited).
The opening scene is set in space. Apparently, advice on it was by Arthur C Clarke, not that it's credited. The Earth is shown with a greenish colour as it wasn't known then what it would look like from space. A tiny part of that scene was used by Rank in the 1970s for their screen advertising logo.