questionText: To ask the Secretary of State for the Home Department, how many investigations have been undertaken by his Department's professional standards unit in each year since 2015, broken down into the categories of (a) immigration, borders and citizenship, (b) policing and (c) counter-terrorism.
answerText: The requested information is not centrally held, and complying with this request would incur a disproportionate cost to the department.
heading: Home Office: Standards