In dealing with a historic building for anything other than routine maintenance, professional input is essential and tradesmen with traditional skills are needed. Using incorrect, inappropriate or unnecessary methods and materials can do a great deal of expensive damage.

The list below is not comprehensive and is being continually updated. The inclusion of a professional consultant, craftsman or tradesman on this list is not an indication of Local Authority approval of their skill or experience, merely that they have represented themselves as having such skills.