The expansion, conversion or redevelopment of premises for uses falling within classes B1, B2, B8 or similar uses will be permitted in the borough’s Primary Industrial Sites and Business Parks, and at other premises falling within those use classes, provided that:

1. The development would not adversely affect residential amenity or highway and traffic conditions; and
2. Would not lead to a significant reduction in employment provided on the site; and
3. The resultant trip generation is catered for by the most sustainable means.