SP
Well the caption states a BT fault, which would be consistent with the circuit between Kirkstall Road and the transmitter failing. Whether there was CCI as well may be a separate issue.
Interestingly I have a recording from YTV in 1989 which has interference on the picture which looks exactly the same as on that video! Was there some transmitter work at Emley around that time which caused it?
Well the caption states a BT fault, which would be consistent with the circuit between Kirkstall Road and the transmitter failing. Whether there was CCI as well may be a separate issue.