Around the 9'30 mark, Sylvia Syms reveals an answer, only for the shot to cut away, and then be on Terry standing in front of Tim Brooke-Taylor, awaiting his response. Although the show would have had many edit points throughout, this is a slightly jarring one, as it's obvious whatever was discussed between Terry and Syms was left in the edit suite in this instance.
During the second round, Tim Brooke-Taylor and Lorraine Chase claim to have misprinted answer cards, which the BBC have provided to save money; instead of a pinkish border, there are lines throughout the cards.