External alterations including a) lowering of cills at ground floor level and b) the replacement of existing windows across all elevations.

Horizontal extension at 8th and 9th floor levels and three-storey vertical extension plus plant enclosure to create Class E floorspace; alterations and refurbishment to existing windows and facades; structural alterations and repositioning of cores; creation of new and refurbished entrances on Gresham Street and at the junction of Aldermanbury and Love Lane; creation of inset balconies; creation of roof terraces at levels 8, 10 and 12; removal and replacement of plant and installation of PV; public realm improvements for new hard and soft landscaping; removal of ground floor mezzanine level facilitating the provision of retail frontages and retail units to Aldermanbury; provision of cycle storage and other works incidental to the development.

Repairs and minor alterations to the existing windows and window framing at first, second and third floor levels of Crescent House, including: stripping, repairing and redecorating existing window frames; replacement of existing single-glazing with vacuum glazing panels; insulation works to the main concrete vaulted roof and first floor concrete soffit; and associated works.

An application under Section 73 of the Town and Country Planning Act 1990 (as amended) to vary Condition 12 (approved drawings) of planning permission 20/00693/FULL dated 3 August 2021 to incorporate minor material amendments comprising: (i) alterations to the material of roof gutters; (ii) alterations to rainwater goods, outlets and SVPs; (iii) replacement casement windows at roof level; (iv) repairs to the railings to the south elevation; (v) additional ventilation detail below the consented proposed slope; (vi) insertion of a sacrificial stone kerb; and (vii ) lightning protection.

External alterations to the eastern elevation of the building, including: (i) the replacement of existing brickwork with 2no. louvres at lower ground floor level; (ii) the replacement of 4no. existing glazed panels with 4no. louvres at ground floor level; and (iii) the replacement of 4no. existing louvres with new louvres and 5no. existing louvres with windows at first floor level.

External alterations and refurbishments works including: replacement of windows; erection of new cycle parking spaces; and introduction of a platform lift.

External alterations for removal of windows to accommodate temporary air conditioning units in the West Wing committee rooms 2, 3 and 4.

Internal and external alterations to the existing building including replacement and refurbishment of selected windows at levels two, three, four, five and dormer windows at the east, south and west elevations, refurbishment of internal circulation spaces, reception and end of journey space, refurbishment of floors one, two, three, four and five, alterations to the ceiling at fifth floor level, and replacement of existing plant at roof level.

Alterations to shop front including replacement of existing shopfront glazing on ground floor level with sash windows.

Erection of a new roof terrace, associated lift overrun and extension of stair core; the extension of the rear fire escape to roof level; installation of PV panels on roof; replacement of windows; alterations to existing entrances to create level access; and new external staircase for basement access for commuters.