The Home Office held a contract with Capita from October 2012 to October 2016, to establish contact with individuals who were in the Migration Refusal Pool, which is a pool of records of those who have applied to remain in the UK but had not obtained any leave.
Those individuals who had been refused leave to remain in the UK, had their existing leave curtailed or had an application or representations rejected, were contacted by Capita to discuss the options open to them. The data for the individuals to be contacted was supplied to Capita by the Home Office.
More information about review of historical removals and detentions dating back to 2002 who might have been part of the Windrush generation, is set out in the second monthly update provided by the Home Secretary to the Rt Hon Yvette Cooper MP on 21 August 2018. A copy of that letter has been deposited in the House Library.