This is a 1943 documentary about British agriculture.

not sure many farmers had the machines shown because of the war as I always understood machinery was hard to find in Canada until after the war.

I do remember my grand father cutting a small patch of grain in a paddock with a scythe and a cradle on it.
Unlike the picture shown he caught the grain ('corn' in the video) in the cradle and when he had enough he took a small bit go the grain and used it to tie the rest of the grain into a sheaf.

Not many tractors running around here until after the war but many of those shown were common in the 50ies although there were no tracked machines that I remember.

I am sure there was a lot of propaganda in that video for the war effort.

https://www.youtube.com/watch?v=Evatp5CRKGY#t=890

15 minutes long if you watch it all.
Skip through if not enough time to see the combine and a 26 row grain drill or a 12 foot cutting bar.