Protection from the Elements:
It is the responsibility of the owner to adequately assess the need to protect their horse(s) or pony(s) from exposure to the cold (wind chill, especially when their coats are thin and wet), from the damp , heat, flies etc and provide, when weather/other environmental conditions dictate;
a). a field shelter or shelters where natural cover does not exist or such cover is inadequate.
b). suitable rug(s) of the correct size and design for the type/age of horse or pony, the weather conditions and which are correctly fitted.
c). Relocation to a suitable stable/loose box until weather conditions improve.
Protecting them against the Environment.