To ask the Secretary of State for the Home Department, what proportion of immigration detainees who are (a) foreign national offenders convicted of immigration offences, (b) foreign national offenders convicted of non-immigration offences and (c) other detainees were held in immigration detention for (i) 28 days or fewer, (ii) over 28 days but fewer than four months and (iii) over four months in the last year.
The below table provides details of immigration detainees detained at the end of June 2015 and is taken from quarterly published national statistics:
Held 28 Days or Fewer
Over 28 Days But Fewer Than Four Months
Four to Six Months
Six to Twelve Months
Over Twelve Months
Foreign National Offenders
It is not possible to provide a break-down of foreign national offenders convicted of immigration offences and foreign national offenders convicted of non-immigration offences. Such data is not aggregated in national reporting systems, which would mean these questions could only be answered through a disproportionately expensive manual case search to collate the data.