The 'coughing' method of cheating was used by major Charles Ingram to help him answer questions when he was stuck. The two people involved in the scam were Diana Ingram and Tecwen Whittock. Most of the time, Tecwen Whittock would cough loudly at the moment he read out the correct answers, however if he did not know the answer Diana would cough instead. On one occasion, Tecwen broke the code by coughing and loudly shouted 'no' to tell Charles that his answer was incorrect, and he then made an all-stop signal by blowing his nose telling Charles to change his mind.