An infrastructure development plan is included in the evidence base but it gives insufficient detail on how the infrastructure will be developed and who will meet the costs (the developers may not). This is not consistent with national policy: NPPF paragraph 177 states that "It is . . . important to ensure that there is a reasonable prospect that planned infrastructure is deliverable in a timely fashion . . . and . . . that local planning authorities understand district-wide development costs at the time Local Plans are drawn up".