I'd never heard of this series before I accidentally came across it on Amazon. It's very well written and acted and is astonishingly intelligent. Very political - in the widest sense of the word - and is totally devoid of stereotypes and cliches; for example several members of the working class Haywards are Tories and 2 of the upper class Warringtons are Socialists ( the wife even ends up a Labour MP ). Summarising the plot would be a bit pointless, basically very high quality soap opera and the interweaving fortunes of 2 families in Cumberland over the immediate post war years ( though also encompassing war-ravaged Germany/Eastern Europe and the start of the Cold War, giving the series an almost epic quality, amazing considering its low budget ).
I would give this 5 stars if it weren't for a few minor flaws, a few historical inaccuracies and the first 2 episodes have a little too much political exposition, but this is basically a very good series that I would recommend anyone interested in the great ITV drama series of a generation ago ( ie Upstairs Downstairs, We'll Meet Again ) should watch.
I've also now seen the very good 2nd series - but apparently there were 3 series - roll on the release of this final series!