Getting planning permission would depend on the proposed development and the restrictions imposed on the area that the development is targeted to. For example, if you are proposing a theme park within a conservation area, it’s most likely that you will not get the consent.
The proposals need to respect and take into account a number of factors that are normally described in local policy documents as well as national policies. The client (or for more complex projects an appointed planning consultant) will need to go through the local planning policies prior to submitting an application and understand the LPA’s vision and what would be considered acceptable development for that area. Even if it’s in contrast to the original vision, the client needs to have a robust argument about the proposals that the LPA would need to find beneficial and still consider.