The United Nations Special Rapporteur on Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment and Amnesty International have raised concerns about the centres.
[1] Under this restrictive regime, prisoners are kept in solitary confinement and are allowed one hour per day of recreation; they cannot speak with other inmates and are limited to two visits of thirty minutes per month.
[3] Nils Melzer, the United Nations Special Rapporteur on Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment found the conditions in CSCs to be "comparable to solitary detention" and was particularly concerned by the case of Kevan Thakrar, who had been held in CSCs for 11 years.
[3] Amnesty International stated the regime was "cruel, inhumane or degrading treatment".
[2][4] In 2022, Deputy Prime Minister Dominic Raab announced that the government would spend £6 million to expand the CSC regime.