The character of Blakey was a great comic creation and one which was really of its time. I suspect the mildly sadistic jobsworth who sucked up to the bosses was familiar to much of the audience from their own workplaces. The series (like many of its kind) hasn't aged well, but some characters endear, don't they?
Cant have been easy wearing a Hitler moustache less than 20 years after WWII.
Watching repeats reminds you how little traffic there was back then.