Change of use of part of existing B8 Storage buildings [with associated offices] to permit uses under Use Class E(c)(i-iii) (financial services, professional services (other than health or medical services), or any other services which it is appropriate to provide in a commercial, business or service locality); E(d) (indoor fitness) (Unit 2C only); and E(g)(i-iii) (offices, the research and development of products or processes, or light industrial).