Observations on a development within the adjoining Borough of Westminster with respect to erection of a two-storey extension including roof-level plant along the Bressenden Place facade to provide a new office entrance pavilion (Class E), the provision of Class E office /retail accommodation, remodelling of the crown of Portland House and creation of a setback rooftop extension to provide office amenity (Class E) and an outdoor terrace, reconfiguration of the second floor plant accommodation fronting Cardinal Place, relocation of the zephyr on Bressenden Place, provision of cycle parking, public realm and associated works at Portland House, Bressenden Place, London, SW1E 5BH.