The client has made proposals to the Industry Regulator to significantly enhance network resilience through the reliability, availability and maintainability of asset and spares inventory. The basis of these proposals is the development of two sites, each site to include two warehouses. On each site there would be one warehouse of standard construction and one of specialist construction for the storage of specialist products. The proposals have not been accepted by Ofgem. The Client requires a review to assess the validity of their proposals whilst providing an enhanced rationale or alternatively the development of new proposals.