Two ways to start the same programme.
Option one: the Diagnostic first. Commission the Diagnostic on its own at £17,500. At the week six readout you see the findings, the roadmap and the recommended phase two. If you commission a solution within three months, the full fee is credited against it. Right when the relationship is new or the budget owner is not yet in the room.
Option two: the programme. Commission the Diagnostic and the solution together as one decision, from £40,000 in total with the Diagnostic included. Phase two is scoped and confirmed at the week six readout from what the Diagnostic finds, with a break clause after the Diagnostic if you choose not to continue. Right when there is a clear mandate, a planning deadline or a board case to make. One procurement decision instead of two.
"From" because the Diagnostic tailors what phase two needs to be. The standard programme is £40,000; scope that extends beyond marketing into Finance, Product or Commercial is priced at the readout.
Talk through which way suits you