Class B1 of the Town and Country Planning (Use Classes) Order 1987. Where the use is for all or any of the following purposes: as an office other than than a use within Class A2, for research and development of products or processes or for any industrial process. The use must be able to be carried out in any residential area without detriment to the amenity of the area by reason of noise, vibration, smell, fumes, smoke, soot, ash, dust or grit.