I'd forgotten that
I remember queuing up for the Kop and checking whether the BBC van was there, indicating whether or not we were due to be on MOTD that evening. I don't remember looking for ITV vans for the big match, but, checking wiki, that did keep running until 1992 so they must have also been a feature.
EDIT - oh just spotted the Sunday highlights version of The Big Match ended in 1981; that explains why I only remember it as a young kid & it doesn't feature in my match going memories.