Amendments to planning permission dated 29th July 2014 (RN 13/09737/FULL) for the demolition of Ergon House and construction of eight storey residential building incorporating a ground floor retail unit (Class A1) and partial demolition and reconstruction of rear wing of 9 Millbank and conversion to residential use to provide 161 residential flats. Conversion of the gatehouse on Dean Bradley Street to provide a single dwelling unit. Provision of basement car parking and landscaped courtyards. Namely, alterations to internal layout, provision of new window, changes to roof level terrace, balustrading and arrangement of planters, provision of new guarding and access gate at level 09, openable windows, internal works, alterations to roof screen, new smoke shaft to north east corner, new smoke extract at level 09 and new fixings for maintenance purposes.

Amendments to planning permission dated 21st May 2019 (RN: 19/00087/FULL) for, 'Demolition of existing buildings and demolition behind retained facades of 19 and 20 Denman Street facades; realignment of 4-6 Glasshouse Street, 1 Sherwood Street, 8 Glasshouse Street and 11-17 Shaftesbury Avenue facades and retention of Piccadilly Lights (adverts). Construction of a replacement six storey building (plus 6th floor mezzanine office) with three basement levels to create a mixed use scheme comprising office (Class B1) at part ground to 6th storey mezzanine; retail (Classes A1 retail and A3 restaurant) at part basement 1, part ground and part first floor; up to seven residential units (Class C3) at part first floor, part second floor and part third floor; and plant and cycle storage within the basement. Associated works including mechanical plant within roof enclosure and loading facilities; NAMELY; provision of sedum roof, internal alterations to the layout of the residential flats, replacement of glass roof maintenance balustrade on Denman Street with metal balustrade; alterations to window dimensions, slate roof and ceramic cladding on Sherwood Street; alterations to the Shaftesbury Avenue roof mansard; minor modifications to roof grating, roof facet on Denman Street, alterations to the slate roof to allow for improved roof maintenance access; and addition of sprinkler inlet point on Denman Street.

Amendments to planning permission dated 29 July 2014 (RN: 13/09737) for Demolition of Ergon House and construction of eight storey residential building incorporating a ground floor retail unit (Class A1) and partial demolition and reconstruction of rear wing of 9 Millbank and conversion to residential use to provide 161 residential flats. Conversion of the gatehouse on Dean Bradley Street to provide a single dwelling unit. Provision of basement car parking and landscaped courtyards; Namely, the introduction of a winter garden at ninth floor; amending existing double glazed semi-circular windows to Crittall double glazed; the addition of decorative grilles in north core; additional lights; new double glazed Crittall doors to third floor Juliet balconies; minor amendments to layouts; removal of rooflght to south core and new balustrades to north core balustrades and sixth floor colonnade, alterations at roof level and other external changes.

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.

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.

Amendments to planning permission 15 November 2018 (RN: 18/03869/FULL) for Variation of Conditions 1, 3, 4, 6, 8, 9, 12, 17 and 30 of planning permission dated 22 February 2018 (RN: 16/12289/FULL) for: Demolition of existing buildings to the centre and eastern end of the site and redevelopment comprising erection of buildings of between six and 20 storeys in height to provide 335 residential units (Class C3), a hotel and serviced apartments (Class C1), offices (Class B1), gym (Class D2), retail (Class A1/A3) and a primary school (Class D1) with associated landscaping and open space, highways works, off street ground floor service bay and two storey basement to provide car, cycle and motorcycle parking and ancillary servicing space. NAMELY for the following changes ; 1, the replacement of one external window with a louvre on the on the south elevation, 2, amendments to the spandrel panels and glazing above the service yard entrance on the north elevation, 3, the replacement of glazing with spandrel panels on east elevation, 4, the introduction of louvred grills on the west elevation, alongside the variation of Condition 1: Approved Drawings.

Erection of five storey infill extension; partial demolition and rebuilding of building; alterations at ground floor level to extend existing retail unit; alterations to external fenestration; change of use of first floor language school from D1 to C3; all in association with the use as 7 additional residential flats (Use Class C3)