43 - 45 Portman Square London W1H 6LY
Amendments to planning permission dated 7th April 2025 (RN: 24/04987/FULL) for Partial demolition of the existing roof and removal of plant equipment; construction of a roof extension providing new office (Class E) floorspace with associated external amenity spaces and plant equipment; refurbishment of the existing building, including infilling of the existing atrium; alterations to the existing façade; provision of cycle parking spaces and end of journey facilities, and all associated and ancillary works. Namely, to allow Retention of existing cores, Infilling of atria; Provision of additional rooflights to the western 3rd floor terrace; Layout changes at ground and lower ground levels; second existing lift extended to level 9; and changes to some windows on the eastern façade and retention of existing first floor windows along Orchard Street.