The second season of Roberts Robots contained more breaking of the fourth wall, with characters smiling directly to camera, or giving double takes. This reaches its peak here, with Eric (Nigel Pegram) complaining of a repeated joke of Katie's: "you said that in episode five!"
John Clive is credited with writing three songs for this special:
"I Like It Mr. Sommerby"
"Yellow Train"
"Three Santa Clauses"
A fourth song, "The Washing-Up Rag", is credited to Clive and Roy Budd.
A fourth song, "The Washing-Up Rag", is credited to Clive and Roy Budd.