At the end of this phase, the various options available to improve the station will have been identified; each of these available options will have been assessed; and a single option and outline design will have been recommended. The business case should confirm whether or not the chosen option is affordable, including consideration of whole-life cost issues, whether it can be delivered in a reasonable timescale, whether it will provide value for money, and, on this basis, whether to proceed to detailed station design and implementation.