Look some people just don't like regional accents. I suspect that's why they're giving it a low score. It's not the best acted show and yes the dialogue is a little weak but it's basically a good story. It's a work of fiction. Some people are criticising it because it's unlikely and not real life, neither is Star Wars and it's got some dodgy acting too! It's full of twists and turns in the story. It is intense at times and keeps me interested and wanting to watch the next episode. Is that not what you want from a story? A little escapism? Watch it. Give it a go and don't think too much into it. On saying all that I doubt it'll win a bafta.