21. Unlike public prisons, the performance of PFI prisons is monitored by an on-site Controller from the Prison Service. In the past, there have been different approaches to the role, with some Controllers becoming too close to the contractor, whilst others were adversarial. The Home Office agreed that there had been inconsistencies. The Controller's role would be simplified to focus purely on contract monitoring. All Controllers would be line managed by one person, a senior member of the Home Office, who would be developing training to ensure that there was a consistent approach to assessing a prison's performance.21
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21 ibid, para 1.23; Qq 79, 93-94, 130-131