Alfie Solomons' dog Cyril appears as Tommy's dog in this episode, Alfie's last request was that Tommy take care of him.
Snow Hill is the main station in Birmingham - but was bombed out in 1940. The set used are the streets opposite the Union Pub Canal St., Manchester, and the cut down factory chimney used in the beer adverts can be seen in the background.
In the beginning of this episode, Tommy sees a scarecrow that is dressed like him. Cillian Murphy, who plays Tommy, played Dr. Jonathan Crane AKA The Scarecrow in Christopher Nolan's Dark Knight Trilogy.