Information on the number of people detained wrongfully under immigration powers between 2012-13 and 2016-17 is set out in Sir Philip Rutnam’s letter to the Rt Hon Yvette Cooper MP, dated 25 June 2018 and that is deposited in the House Library. I am arranging for a copy of that letter to be provided to Lord Bassam of Brighton.
The Home Office is reviewing all cases of immigration detention, dating back to 2002, of Caribbean Commonwealth nationals now aged over 45 (i.e. born before 1 January 1973), to establish whether any of those people could have entered the UK prior to 1973 and therefore might be protected by the Immigration Act 1971. As the Home Secretary told the Joint Committee on Human Rights on 6 June 2018, that work is due to be completed by the middle of July 2018. Its findings will be reported to Parliament within the regular series of updates, to the Home Affairs Select Committee, to which the Home Secretary has made an explicit commitment.