Part 4  The deal has been modified with out increasing the unitary charge 

4.1  An important characteristic of PFI contracts is that they transfer the risks of delivering public services to the private sector. During the life of the contract departments need to ensure that their behaviour does not lead to these risks returning to the public sector. This part of our report shows that in partnership NS&I and SBS have acted to improve SBS's financial position and to achieve NS&I's objectives without increasing the unitary charge.