In 2001, the NAO published the report Managing the relationship to secure a successful partnership in PFI projects. In 2003, the NAO published a further report, PPP in practice: National Savings and Investments' deal with Siemens Business Services, four years on, which examined how the parties built a successful partnership. These reports made various recommendations about how to make a partnership work in practice to achieve better service delivery. Do generic elements of the Tube partnerships represent good practice against the indicators set out in these two reports?