Elizabeth Ercy (Jeannine Belmond) received an "introducing" credit.
Sir Lancelot Spratt:
How did I get home ?
Dr. Gaston Grimsdyke: I bought you.
Sir Lancelot Spratt: By car ?
Dr. Gaston Grimsdyke: No, operating trolley.
When Sir Lancelot Spratt draws lines on Tarquin Wendover's chest to indicate where he will cut, they are the width of the pencil. A few seconds later the camera jumps back to his chest and they are about four times as wide.