I got this from an ‘advice site’
4. Livestock shelters are common to not have a planning permission
Livestock shelters are commonly built without obtaining planning approval because they are considered outbuildings, which are frequently exempt from them. A conventional definition of an outbuilding is a structure that is an accessory to a main building and is constructed on private property. This category includes livestock shelters since they are frequently situated inside the limits of the property where livestock is maintained.
In addition, livestock shelters are generally exempt from most building regulations, which means that they can be built without obtaining planning permission from the local authority. This is because livestock shelters are typically classified as agricultural structures, which are exempt from building codes.
It is important to note, however, that there are some circumstances in which planning permission for a livestock shelter may be required. For example, if the shelter is to be located in an area designated as a conservation area, then planning permission will usually be required.
Similarly, if the shelter is to be built on land that is owned or managed by another person or organization, then planning permission may also be required. Therefore, it is important to check with the local authority before proceeding.
1. Agricultural storage units can be built without obtaining planning permission
In some cases, agricultural storage facilities can be built without obtaining planning approval. In general, agricultural structures and buildings can be constructed without obtaining planning approval as long as they are temporary and only utilized for agricultural purposes.
This could include barns, sheds, and other storage units used to store agricultural equipment, feed, and other materials. In some cases, even if a structure does not require planning permission, specific building regulations must be followed.
Hasn’t their planning dept. Just amalgamated with Waverley’s? 
