Good morning everyone 
Cloudy here and quite humid. Some rain overnight and could be some showers today,
I see the Film 4 is showing the Michael Powell film The Spy in Black again. That film starred Conrad Veidt and Valerie Hobson. A year after Powell made that film he made another film with those two called Contraband which was a lighter film, a bit Hitchcockian. I wonder if that will ever get shown. It's not available on DVD. It was released in the States (sometimes as Blackout) but with several minutes cut out - that version is on Youtube - a DVD is available from the States but I think it likely that that's the shorter version.
I did watch that Scott documentary shown on Talking Pictures but it's not the BFI restored version and was not tinted - so the Radio Times review was fundamentally incorrect. The review was about a 1923 version by Ponting called "The Great White Silence". The BFI have a DVD of that version which also has another documentary "The Epic of Everest" (Mallory/Irvine's fateful 1924 expedition). The DVD has extras which include the version shown by Talking Pictures.
I hope everyone has a good day 