Question to the Home Office:

To ask His Majesty's Government how many major police operations have included in their reports a statement that a deceased person would have been interviewed under caution had they been alive.

The Home Office does not hold the data requested.

However, in the Home Office crime outcome statistics, outcome 12 is used to record investigations closed where a named suspect has been identified but is either too ill (physically or mentally) to prosecute, or is confirmed to have died either before the crime was reported to police or before enough evidence to charge could be obtained. In the 12 months to March 2023, the number of police investigations closed under outcome 12 in England and Wales was 18,335.

The crime outcome statistics cover all notifiable offences and do not distinguish between major and minor investigations. The statistics can be viewed here: https://www.gov.uk/government/collections/crime-outcomes-in-england-and-wales-statistics.