4.26 PFI involves long-term contracts in which private sector contractors are bound to deliver a clear level of service at a fixed price over the whole life of the asset. A primary motivation behind this structure is to ensure value for money over the long term. As the experience of service delivery under PFI increases, and particularly as the assets procured under PFI begin to age, the Government will seek to evaluate how far the long-term benefits of PFI are realised, and establish and pass on best practice in the public sector's management of these contracts. Future steps to be taken in this area are contained in Chapter 8.