[Neil Jones]

Think it must be noted that a lot of "live" performances that we see on music channels (particularly for older songs pre 1975ish) are all from (mostly) TV show performances usually no video was ever made for the song (as while Bohemian Rhapsody gave the idea of a music video a major kick up the marketing requirements, The Beatles (and maybe others) were doing them in the 1960s but they weren't "music videos" as such) or it was a well charting B side or some other successful song off an album somewhere. And of course TV recordings from that era are of variable quality anyway from broadcast to "making potato-vision look good"

That Slade video we see most Christmases with an overenthusiastic drummer is obviously from some TV show/compilation somewhere (and was zoomed to hide the graphics as best as possible) as Slade didn't have time to make a video for it for one reason or another, so that has sort of become its video.