The length of a record of interview largely depends on the complexity of the investigation, and whether a person will elect to answer the questions or to give a “no comment” interview.
A “no comment” interview ordinarily takes half an hour or less, as the questions police ask are limited by the refusal to answer questions.
If a person elects to answer a record of interview and the offences are serious, the record of interview may go for over an hour depending on the number of questions being asked by police.
Prior to a record of interview for serious offences, police will have a pre-determined line of questioning. These questions can be increased depending on the answers of the person being interviewed.