The Minikillers on Youtube

In the late '60s after she left The Avengers, Diana Rigg starred in this curious little eurospy serial of 4 ten minute episodes. Apparently they was intended to be shown on monitors at the gas pumps in gas stations - as improbable as that sounds.
I've seen them before but the quality was awful. This looks pretty good.
https://www.youtube.com/watch?v=2g3iuSESdo4