Demolition and replacement of rear extension at lower ground, new extension at ground adjacent to boundary with no. 19 St Petersburgh Place; demolition and replacement of existing rear ground conservatory; installation of new metal railings enclosing terrace at rear first floor; alterations comprising of replacement fenestration and doors to front and rear elevations; and replacement and relocation of entrance steps with raised balustrade; alterations and infill extension to roof and installation of lantern light.

Amendments to planning permission dated 11th July 2022 (RN 22/03408/FULL) for the external alterations to the building, including creation of a new roof terrace with installation of a new air conditioning unit at roof level NAMELY handrail to roof terrace perimeter with CCTV camera; amendment to planters to roof terrace; installation of CCTV to front elevation; alterations to first floor window fenestration; reinstate original render finish to ground floor; boundary fence to terrace; and first floor decorative balcony alterations.

Amendments to planning permission dated 27th October 2021 (RN 21/04810/FULL) for the erection of garden outbuilding and store; rebuilding of part of rear boundary walls; and associated works. NAMELY to make adjustments to size and position of doors and windows; addition of roof light and reposition of external steps.

Amendments to planning permission dated 31 August 2022 (RN: 22/02609/FULL) (which varied planning permission dated 07 December 2020 (RN: 20/03048/FULL (as amended by 22/01515/NMA)) for 'Demolition of 55-58 Pall Mall and 1-4 Crown Passage, and erection of a new building with a part retained facade comprising basement, ground and six upper floors plus mezzanine with a new raised height mansard roof level, to provide office (Class B1) use at basement, part ground to seventh floor level, and provision of two flexible retail/ restaurant (Class A1/ A3) units at part ground level. Creation of terraces at 5th, 6th floor level and 6th floor mezzanine level, installation of plant, and provision of cycle parking spaces and facilities'. Namely, to allow amendments including, Internal revisions to layout and detail of door openings throughout ground to fourth floors; Lobby area added to secondary stairwell at first to fourth floor levels; Revised arrangement of openable doors at fifth and sixth floor level, onto terrace area; Tenant plant enclosure line adjusted to allow for interfacing with lift overrun; Door opening onto Crown Passage recessed to allow doors to open outwards within site boundary; Wall linings altered to reflect amendments to party wall information; Basement layout altered and associated revision of cycle parking layout, reducing the number of cycle parking spaces from 100 to 99; Maintenance access door added within basement; Revisions to fenestration detailing on southeast elevation; Revised materials to southwest and northeast elevations; Relocation of smoke extract system on roof; and Inclusion of door within plant screen for cleaning and maintenance purposes.

Partial demolition of building and erection of new extensions at ground and first floor levels, alterations to roof, basement excavation, alterations to windows and doors, new boundary wall treatment facing Elm Tree Road, repositioning of pedestrian gate and hard and soft landscaping works.

Variation of Condition 1 of planning permission dated 20th December 2022 (RN 22/05746/FULL) excavation to create basement extension and lower pavement vaults; removal of existing extensions and replace with extensions at rear lower ground to third floor level including roof terrace at rear first floor level; erection of fourth floor extension in mansard style to rear and open up blind windows to front; installation of plant within mansard structure; new landscaping to garden and replace boundary wall with 16 Wilton Crescent; Namely, external wall lights at lower ground to first floor and third floor level and new air vents to the rear lower ground floor level; alterations to the design of railings at ground, first and third floor level balconies; and an intake air housing to the balcony at rear ground floor level; extended metal staircase from the lower ground floor level to rear ground floor level; and alterations to the garden finishes and layout including the provision of a new freestanding trellis with low-level air duct behind.

Erection of single storey rear and side extension at ground floor level; roof demolition and altered/extended with parapet to rear and side elevations and side extension; replacement of windows throughout; alterations and elargement to the existing fenestration within the upper floor rear elevation; installation of fenestration within the new parapet rear and flank elevations; installation of openable-walk-on glass floor to front lightwell; erection of boundary planter, railings, side stair adjusted, and bins enclosure; and installation of air condition units within acoustic screens at rear roof level.

Amendments to planning permission dated 27 March 2019 (RN: 17/02394/FULL) for alterations and extensions, including demolition and reconstruction of rear extensions, excavation of basement floor, removal of tree, alterations to front boundary wall, installation of mechanical plant, erection of cupola at roof level, use of part of garden to rear of No.8 Ordnance Hill, and internal works to all floor levels in connection with the use of the building as five residential apartments (2x3 bed, 2x2 bed, and 1x1 bed flats); namely, the insertion of a new sash window to match the existing windows in the East elevation of the original chapel building; the introduction of powder coated aluminium windows within the new rear block, providing a consistent design approach within this new part of the building, and allowing an enhanced environmental performance to be achieved; and the simplification of the façade treatment of this new part of the building, (simplified cornice detailing, omission of window surround detail)

Details of typical bay details - front, side and rear façades, dormer windows, external metalwork, ground floor entrance and solar panels showing architectural relationship to the roof, details of samples of the facing materials, details of a car club scheme, detailed drawings showing the following alteration(s) to the scheme; Provision of a privacy screen on the southern boundary of the terraces at rear 2nd and 3rd floor levels and details of code of construction practice pursuant to Condition 3, 4, 14, 15, 16 of planning permission dated 23rd September 2022 (RN: 22/03519/FULL)

Amendments to planning permission dated 20 December 2022 (RN: 22/05746/FULL) for variation of Condition 1 of planning permission dated 08 September 2014 (RN:14/03923/FULL) for the excavation to create basement extension and lower pavement vaults; removal of existing extensions and replace with extensions at rear lower ground to third floor level including roof terrace at rear first floor level; erection of fourth floor extension in mansard style to rear and open up blind windows to front; installation of plant within mansard structure; new landscaping to garden and replace boundary wall with 16 Wilton Crescent; namely, alterations to the size and position of the new rooflights and access hatch at roof level, opening up of a blind window at rear third floor level and alterations to the glazing on the front elevation. Namely, internal alterations to the staircase at Lower Ground, Ground and First Floor.