Presumably the "disability" angle is intended to make the action of the authorities seem harsh and sell more newspapers. As to the legal difference between a storage barn and a recording studio, the former is an agricultural building and the latter is an industrial building. Holt appears to be a small town/village in the countryside where an agricultural building would be appropriate whereas an industrial building may well not; depending upon its size and location. I am sure that this will have been considered by the relevant authorities who have published policies on such matters which will have been subject to extensive publicity and an examination in public (a public inquiry in other words). Decisions on planning matters are not simply taken on the fly.