In developing a High Value Change Proposal Project Co must liaise with the Authority and relevant end users (being such persons or organisations as Project Co in consultation with the Authority considers appropriate). The Authority must provide Project Co with such information about its requirements as Project Co reasonably requires and must assist Project Co in the review of any draft designs in relation to the High Value Change Proposal. Any and all information and other input or feedback provided by the Authority to Project Co, unless expressly stated otherwise by the Authority, will be without warranty and will be provided without prejudice to the Authority's rights under this Section 4 (High Value Changes).