Exploring the 1970s culture was quite brave. Irish workers, black detectives, Asian families setting up home in the UK, police brutality, political incorrectness etc.
The 70s look akin to the Wild West when looked back on in this way.
It's a very escapist and fascinating show. The incessant swearing, insults and slapdowns not only add humour but polarise how uncompromising the story intends to be with viewers.
There seems to be a love interest in there too... how exciting!
:-D