Part 4 The re-assessment of the cost of technical transition

Although technical transition was excluded from the scope of the PFI deal, the building design had to be integrated with the technical transition plans to ensure there would be no break in GCHQ's service to its customers. At this stage GCHQ had not yet considered technical transition plans in any detail. When it did so, very substantial extra costs emerged. The reasons for these increases were reviewed by an independent Cabinet Office appointee and the two elements of the move were re-scoped as a comprehensive business re-location programme, not just a PFI serviced building project.