Second appearance by Juliet Harmer as Prue, and it is rare for anyone other than the main cast to reappear.
In the scene at the auction where Danny pretends to be a Brett a chap discusses Mummy and Danny say everyone needs a mummy. The actor played "Mother" in the Avengers
At one point, Lord Brett Sinclair says to Danny Wilde: "You're no Cary Grant yourself." Tony Curtis and Cary Grant starred together in Operation Petticoat (1959) and Cary Grant and Roger Moore were also friends.
Juliet Harmer (Prue) and Laurence Naismith (Judge Fulton) were cast members of the contemporary movie Quest for Love (1971).