Ah I see.
In the video you posted, the "wrong-way *****s" are doing what I was describing. I would scream at anyone cycling towards me going the wrong way down the cycle lane!
I was cycling down a bike lane near Waterloo once with about 7 others going the same way as me, and there was a guy on a Boris bike going the opposite way and everybody else was moving out into the road for him. I said to him "You can't just cycle the wrong way down a road", and he shouted abuse at me! Unbelievable.