It's got everything, Labour, the Tories, corruption on steroids, the unions, the music, fashion, haircuts I could well recommend it to the under 40s as a snapshot of the seventies but as you say stuffed with great actors on top of their game with a great script.
On of the best series I have seen on TV.
I think I have watched it three times over the years.
Just done Slasher on Netflix, plenty of gore and nasty kills. Each season is a different storyline. I'm currently three episodes into You, which is about a stalker but told from the stalker's POV. Seems promising so far.