The label on the gin bottle reads: "Shelby Company Limited GIN Distilled for the eradication of seemingly incurable sadness"
In this episode Alfie Solomons (Tom Hardy) is seen with a dog. Tom Hardy is known for his love of dogs and has occasionally gone to premiers and other major events with his dog.
The BBC commissioned season 5 at the same time season 4 was commissioned. Season 5 is expected in 2019.
One scene shows Bonny Gold's father opening a cigarette case with filtered cigarettes. They would not be used for another 30 years.
Tommy Shelby mentions to Luca Changretta that the Peaky Blinders have been conducting business with Al Capone. Tom Hardy, who plays Alfie Solomons in this series, would go on to play Al Capone in the film Capone (2020).