Single storey rear infill extension, alterations to fenestration to the rear with replacement window in existing dormer window. Existing roofs made good, reforming of C16 roof and demolition of rear outbuildings. New internal walls erected to allow for the creation of a ground floor corridor and one 1 bedroom dwelling on the ground floor, with the installation of a WC to the retail units and kitchen and bathroom to the residential accommodation. Internal walls added to create shower rooms and installation of kitchens to create two 2 bedroom first and second floor apartments.

Extension, external and internal alterations to rear portions of building to facilitate change of use 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. Internal alterations including removal of existing walls and stairs and installation of new stud walls, staircases and doors. (Listed Building Consent).

Variation of condition 1 of planning permission dated 3 March 2020 (RN 19/09981/LBC) for the Variation of condition 1 of listed building consent dated 20 February 2016 (RN: 15/10446/LBC) for the: Development of 55-59 Knightsbridge (including retention of Knightsbridge facades, demolition and the dismantling and reinstatement of roofs and chimneys) to provide retail (Class A1) at basement and ground floor levels and 18 residential flats at first, part second floor and third to fifth floor levels. Demolition of 1-2 William Street and its replacement with a redesigned building with internal linkages to 55-91 Knightsbridge. Namely, to allow alterations to William Street Residential Entrances, door to Wilton Place, fenestration changes to rear facade, increased lift Shaft to rear face of William Street, merlons to west elevation, West façade end bay reconstructed, chimneys to coping stone detail in mansard, pavilion gable apex roof stones, ridge height of mansard roofs, projecting signs to shopfronts, retained parapet to no. 55 Wilton Place, general layout alterations, and associated works from RN 19/09981/LBC, NAMELY, to vary the approved drawing numbers to amend the design of the external vent at no. 4 William Street and the removal of a ceiling at third floor level.

Change of use, refurbishment and extension of 153 High Street from Sui Generis (car dealership) to accommodate retail (Class A1) within an extended ground floor unit and 5 No. residential (Class C3) units (2 No. x 1 bedroom apartments, 1 No. x 2 bedroom apartment, and 2 No. x 2 bed mews cottages) accommodated within a two storey rear extension; part-demolition of 151 High Street front extension and refurbishment and change of use of 151 High Street from Sui Generis (car dealership) to 1 No. x 3 bedroom dwelling house (Class C3) including erection of one front dormer window at roof level, reinstatement of front entrance door, various re-arrangements, internal refurbishments, ancillary development and landscaping. Internal alterations to no.151 including replacement of existing internal doors with timber doors, removal of partition wall to kitchen, restoration of panelling, installation of baskets and slips to blocked up fireplaces