5.20 Value for Money Assessment Guidance sets out a mandatory process and methodology to be used in considering whether value for money will be realised through a PFI procurement route. This is a thorough and highly developed procedure involving the application of both qualitative and quantitative tests. This assessment drives a procuring authority's decision to use PFI or not. As described in Chapter 4, the Treasury intends to build on this value for money guidance to make it applicable where a range of delivery models may be under consideration, rather than the binary decision between PFI and conventional procurement that is currently commonly applied.