A fantastic choice Mr Wittering. I remember watching this late one night at Xmas with my Father. The ending with James Donald on the Crane and the appearance of the Martian/Demon (bottom pic) really did scare me. I have never seen the 1950s TV version. Wonderful film.
Recently saw the TV original and was surprised at just how good it was. Needed pruning though, and the film's ending is done far better. I saw this circa age 10-11 and it scared the life out of me (see also 'The Devil Rides Out' & 'Something Evil'). BBC showed Leone's Westerns around this period IIRC, and they shocked/unsettled me too, in a different way.
Just saw this the other week after a gap of about 20 years. My memory had not exagerrated its brilliance.