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yes I'm fine to wait until you find someone to answer my question.
Many thanks for your reply, and sorry for the delay in getting back to you. And in answer to your question I will try to clarify.
The old stables and the old workshop are indeed the same building, and are at one end of the site, sorry for not explaining it better.
The commercial planning we are told extended to the whole site and not to any specific building.
The residential permission included a single story extension,( which has never been built) this was to connect the old 2 story stable and the block of garages, to form one dwelling. So I don't know if this change's your opinion but I would welcome your response.