Hi Jane,
It depends on a lot of factors; size of site, range of landuses and infrastructure require, what policy already exists for the area.
The three options that spring to mind are; Development Brief, SPD and AAP. Obviously all have differing levels of weight in decision making and the development brief and SPD are limitied in their purpose and content by the 2012 regs.
Perhaps if the issue is with multiple landowners setting up a spatial framework group and engaging with them, plus one of the options above would be the best course of action?
If the AAP is for just one site, the process from preparing the plan to examination and adoption should not take too long; limited evidence base and likely reduced number of representors. If you engage with the landowners/developers one would hope your AAP would go relatively unchallenged through the examination.
