25 Wimpole Street London W1G 8GL
Partial excavation of existing rear garden to create a new two storey link extension at lower ground and ground floor level behind 25 Wimpole Street and 18-20 Harley Place to provide Class E (g)(ii) research and development space in conjunction with a new single storey basement and mansard roof extension at 18-20 Harley Place, installation of new plant on main roof at 25 Wimpole Street and new rear garden and outdoor terrace spaces to the rear of 18-20 Harley Place and 25 Wimpole Street. (Part of a land use swap with 27 Wimpole Street). (Linked with 23/03400/FULL)