Question to the Home Office:

To ask the Secretary of State for the Home Department, how many Commonwealth-born citizens were detained by UK immigration services between January 2015 and January 2018.

The Home Office does not hold the information you have requested in a reportable format. The information requested could only be supplied at disproportionate cost.

Home Office data only holds current nationality, and not nationality at birth. The latest data, which goes back to 2009, is published in ‘Immigration Statistics, October to December 2017’, and available at:

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/681703/detention-oct-dec-2017-tables.ods