- Thomas Shelby: If you're not gonna show up for a family meeting, let someone know. We thought you were dead. There is fifteen fucking Italians out there...
- Arthur Shelby: No, there's not. There is thirteen. I just killed two of them.
- Jessie Eden: Gretta died at the age of nineteen, of consumption. And Kitty said you were at her bedside for three months, every day, holding her hand. And after she died, you went away to war. Kitty said that the sweet boy who left never came back.
- Thomas Shelby: No one came back.
- Aunt Polly: Whilst working for this company, I have killed a man, I have lost a man, I have found a son, I have almost lost a son, I have almost lost my own life. Now, I will accept my job back if the terms on offer are favourable, but I will not behave myself.
- Aunt Polly: Ada, how long since you've had a fuck?
- Ada Shelby: What?
- Aunt Polly: Been nearly two years with me. Over Christmas I counted it up. So I made a New Year's resolution to change the situation.
- Ada Shelby: Anybody particular in mind?
- Aunt Polly: Not really. Just me and someone unsuitable.
- Luca Changretta: You want to dance?
- Aunt Polly: I don't dance any more.
- Luca Changretta: Yeah, that's a shame... cos you're dancing with me.
- Luca Changretta: You know, my mother used to say this about you. She said, "That Polly Gray, that child would never let go of a grievance and she loves to dance."
- Aunt Polly: Dropping the law of the bullet was part of the process of modernisation that I was working on before I was... before I was executed.
- Niall Devlin: Before you, I was an ordinary working man.
- Thomas Shelby: Yeah. And now you're one of us.
- Linda Shelby: I don't want you dead. Polly doesn't want you dead. Let's Mr Gold do the killing for money. It's the modern way, Arthur.