Honoria Barbary and Martha Cratchit work in a dress-shop, Mantalini's—a reference to Madame Mantalini, a milliner in Nicholas Nickleby. The toy shop in the neighbourhood, Gruff and Tackleton, appears in The Cricket on the Hearth. The coffee-house on the street is Garraway's, frequented in real life by Dickens and appearing in The Pickwick Papers, Martin Chuzzlewit, Little Dorrit, and The Uncommercial Traveller. Amelia Havisham's first dog here is Jip, the spaniel that is Dora Spenlow's lapdog in David Copperfield. Constable Duff, who appears briefly in a few episodes, is a character from Oliver Twist.
Episode 1: Jaggers mentions his clerk "Mr Heep"—Uriah Heep from David Copperfield; Silas Wegg, the tapman at The Three Cripples (a tavern in Oliver Twist), gives barmaid Daisy a tray of drinks to take back to "Mr Pickwick and his guests" (The Pickwick Papers).
At the New Years reception hosted by the Haversham siblings, the tune being played during the dancing is called "Sir Roger de Coverly" and is played at Fezziwig’s Christmas party in A Christmas Carol.
Episode 4: Jaggers talks of often considering an end to his partnership with Mr Tulkinghorn (from Bleak House).
Episode 6: Scrooge snaps at Cratchit that, in renegotiating terms of a loan, he must surely "have consulted with Jacob Marley's ghost"—a foreshadowing of A Christmas Carol. Mrs Gamp talks of seeing a "Mr Wemmick," like Silas Wegg, go gray and lose his leg—this may be a reference to the father of John Wemmick, in Great Expectations, referred to by his son as "The Aged Parent" or "The Aged P".
Episode 7: In mishearing "Barbary" as "Barnaby," Silas Wegg happens to allude to the title character of Barnaby Rudge. Compeyson's and Matthew Pocket's drunken leaps between rooftops echo Bill Sikes' death in Oliver Twist, when he accidentally hangs himself while trying to descend from a rooftop.
Episode 9: Edward Barbary calls on a Mr Darley for help with his finances, to no avail; the last name suggests F. O. C. Darley, a nineteenth-century American artist who did illustrations for a number of Dickens editions that appeared in the United States.
Episode 10: Honoria's question to her father's creditor, "Have you no heart, Mr Scrooge?", and Mrs Bumble's remark, "'ave you no 'eart, Bumble?", echo the moment in Little Dorrit, Dickens' novel about debtors' prison, when Frederick Dorrit asks Fanny, "Have you no memory? Have you no heart?" They also presage Estella's words in Great Expectations: "You must know . . . that I have no heart—if that has anything to do with my memory."