40. Once the qualitative and quantitative assessments have been completed, an overall assessment should be made taking into account the results of both. This should recognise any limitations in the component parts of the assessment, but should provide the overall justification both for the preferred procurement route for the programme as a whole, and for its constituent parts. The outputs from the quantitative assessment should not be considered in isolation, specifically as a stand-alone case for, or against, PFI.