Extension and external alterations to rear portions of building to facilitate change of use from offices/training/storage to three self-contained flats, with retention of ground floor retail/commercial unit. External alterations including demolition of existing flat roof building to north and flat roof extension to south, erection of a single storey extension to north elevation including first floor terrace and external stair, erection of four dormers to south, alteration to roof of building to east and installation of new/replacement windows and doors.

Demolition of first floor of two storey rear part of building and erection of a replacement first floor and an additional two floors above to create new second and third floors at the rear, erection of a rear extension at main roof level to house an internal staircase, change of use of the replacement rear first floor, second floor and third floor level building from office (Class B1a) to residential (Class C3) in connection with the creation of 1 x 2 bedroom, 2 x 1-bed flats and 1 x studio self-contained flats; associated external alterations consisting of the removal of a window and the addition of 4 windows to the first and second floors and the addition of a rooflight to the third floor of the western elevation of the front part of the building; the removal of an external security grill to an existing first-floor rear window.

Three storey rear extension to existing first/second floor maisonette with office at ground floor level; alterations to front elevation with raised roof above, insertion of two window openings to side elevation; conversion of first and second floor into two x 2 bedroom flats (Following demolition of existing two storey rear outrigger); Alteration of roof of no. 2/2A from hipped to gable.

Change of use of existing upper floors and erection of three storey rear extension, alterations to existing side elevation including bay windows at upper ground and first floor level, and roof extension at second floor level to provide 3no. 1 bed and 3no 2 bed self-contained flats with retention of existing High Street commercial use (taxi office) following the demolition of existing rear projection

Change of use from offices to part retail and part residential (3 apartments); Part demolition of rear flat roof extensions and erection of 2 storey rear extension; Alterations to front door and windows

Amendments to planning permission dated 20 June 2016 (RN: 15/10444) for: Variation of Condition 1 of planning permission dated 8 December 2011 (RN10/01741/FULL) for development of 55-91 Knightsbridge (including retention of Knightsbridge and William Place facades) to provide retail (Class A1) at basement and ground floor levels, office ( Class B1) at part ground, first, and second floor levels and residential flats at part ground, part first,part 2nd and 3rd to 5th floor levels. Off street servicing and new sub basement car park. Removal and replacement of existing tree on William Street. Demolition of 1-2 William Street and its replacement with a redesigned building with internal linkages to 55-91 Knightsbridge. Restoration and repair of external facades and roofs to 3-7 William Street including reinstatement of original roof profile at 4 William Street, conversion of 1st to 3rd floor levels of 3 and 4 William Street for residential purposes ( Class C3). Namely, the substitution of new drawings to allow minor material amendments comprising a revised number and mix of residential units; the provision of a terrace for a residential unit on the western end of the building; erection of a lift shaft to the rear of 4 William Street; alterations to shopfront of Nos. 3 - 4 William Street; extension at 4th floor level to the rear of Knightsbridge; and reconfiguration of the fenestration. Namely, amendment to the external air vent at 4 William Street.

Change of use of guest house/studios into apartments (1 x studio, 5 x 1 bedroom, 1 x 2 bedroom and 1 x 3 bedroom). Demolition of existing rear conservatory, rear balcony, outbuilding and escape stairs. Erection of single storey extension to the rear, installation of roof lights, window and door infills and new window openings, ramped access to the front of the building and the erection of a garden building to be used as an office and alterations to car parking. (Amended description)

Three storey rear extension to existing ground floor office space and first/second floor flat, forming two x 2 bedroom flats at first and second floor levels; insertion of two window openings to side elevation; alteration/extension to front roof slope and changes to roof profile and increase in the ridge height (following demolition of existing 2 storey rear outrigger)

Proposed change of use and subdivision of existing building (A1, A2 and ancillary office use) to form 8x self-contained flats (7x one bed and 1x studio) and erection of a second floor roof extension, two storey rear extension and first floor rear extension following demolition of parts of existing building and formation of roof terrace, balconies and new window and door openings, alterations to external finishes and associated bin storage, landscaping and cycle storage (Amended Plans received 03/06/2019)