Partial change of use and refurbishment of the existing building; and erection of a ground floor rear extension, an additional storey, and the installation of two mezzanine levels (at ground and first floors) to provide for a mixed-use development comprising of office floorspace with external courtyards (Use Class E) at ground floor and ground floor mezzanine level; nine flats (Use Class C3) at first floor, first floor mezzanine level and second floor; and cycle parking, storage and other ancillary areas at basement level.

Observations on a development within the adjoining Borough of Westminster with respect to: "Variation of Condition 1 of planning permission dated 12th August 2021 (RN:21/04250/FULL) for the: Alterations including 7th floor roof extension, alterations to office and retail entrances/shopfronts on Great Marlborough Street; reconfiguration of western lightwell elevation, installation of photovoltaic panels, green roofs, new extract ventilation duct and new plant enclosure at roof level and creation of office and residential terraces. Use of lower ground, part ground and part 1st to part 7th floors as offices (Class B1); use of part ground floor for dual/alternative retail (Class A1) or restaurant (Class A3) purposes; reconfiguration of existing flats and provision of one additional flat; use of basement to provide plant, cycle parking/showers waste storage and car parking (site includes 11 Ramillies Place). NAMELY, to allow various amendments at roof level including new roof plant and services, increased green roof, and other changes to the external appearance of the building." At: Turner House , 16 Great Marlborough Street, London, W1F 7HS