33 In February 2005, a more detailed paper from the project manager to Home Office senior management signposted the need to update the business case for capital cost increases and the potential role of Bicester in the new asylum model. The value for money case for Bicester relied on the assumption that it was to have been part of a wider programme of several centres, whereas thinking by February 2005 was that it would be a singleton centre within the new asylum model. General improvements in the processing of asylum cases, such as the expansion of detained fast-tracking (where the applicant is detained in a Removal Centre while their application is processed) and the advent of non-detained fast-tracking, had improved the baseline against which Bicester's planned performance would be measured. Preparatory works on site at Bicester had started but the Home Office acknowledged that it seemed increasingly unlikely that the detailed designs would be granted approval by the planning authority in the first instance, potentially delaying the start of works beyond April 2005.