I saw this series in 1978 and have remembered it ever since. The plot was subtle, not at all affected; the acting was good, the series engaging. The premise was plausible - Germany invaded the UK successfully in 1940 and Nazism dominated Europe ever since. It is obvious from the conversations that Germany probably did not invade the Soviet Union, that the USA did not become involved in Europe, that a Nazi Germany survived into the 1970s and dominated Europe in the same way that in real history the Soviet Union dominated the Warsaw Pact - not outright occupation of all areas but control and influence. The characters behaved as if they had been living for nearly forty years in a 'European Union' which was in actuality a Nazi-dominated Germanic/'aryan' empire. But nothing about the setting was extreme, outwardly in physical terms the UK looked like the 1970s UK actually did. What was different was the cultural and political background. In many ways the UK was materially better off than we felt it to be in 1978 - in one scene a lead character says, ironically, something like: 'Law and order, no strikes, good jobs, full employment and a good pension when you retire. Its not a bad life under the Germans, eh?' The badness was under the surface of this materially wealthy totalitarian state. This holds lessons for today. I recommend this series very highly.