This chapter considers what tasks the lead designer might undertake at Stage 5 and, more crucially, what lessons might be learned from current construction trends and how Stage 5 knowledge might be harnessed to help practices and clients improve their processes in the earlier project stages. The RIBA Plan of Work 2013 emphatically places the design work of specialist subcontractors into Stage 4. The lead designer may need to be consulted if changes to sequencing, as set out in the Construction Strategy and Construction Programme, are proposed or where change is initiated. Even in scenarios where the lead designer is novated to the contractor, it is commonplace for a client to request that the lead designer produces a report for inclusion in the contractor’s monthly progress report. The lead designer needs to keep abreast of such developments so that their suitability is properly considered by the project team as early as possible.