External and internal alterations including conversion of existing below pavement vaults to provide additional office floorspace, alterations to the lift core, and alterations and installation of mechanical plant at roof level (site includes 36 and 38 Grosvenor Gardens).

Internal alterations and external alterations including refurbishment of the existing windows and the introduction of slimline double-glazed units into the existing frames; limited window replacement on rear elevation; extension to rear mansard roofslope; replacement of roof level plant and installation of plant screen; infill of redundant lightwells to all office floors; façade refurbishment works; and improvements at basement level to provide end of Trip facilities including showers and bike storage. (SIte includes 169 Piccadilly) [Linked to 22/06543/FULL]

Internal alterations, replacement of existing rooflight with double-glazing and installation plant at roof level in connection with the use of the third floor as office (Class E). replacement

External works including terraces at first, second, fourth, fifth and roof level; extension of lift core; installation of photovoltaic panels; and plant within new enclosure at roof level, all in connection with existing office use.

Partial demolition at roof level and creation of an extended fourth floor with extended lift and stair core, plant areas and terrace at fifth floor. Comprehensive refurbishment and associated works in connection with enlargement of existing office.

Restoration, refurbishment and alterations including a new roof extension to area of fifth floor; introduction of a new entrance to building on Bell Yard façade; creation of new plant area on the flat roof of 16 Bell Yard, internal reconfiguration and associated works in connection with continued use as an office (Site includes 13 to 16 Bell Yard). (Linked to 21/02903/FULL)

Alterations to provide inclusive access to the building, comprising installation of a platform lift to the main entrance. Creation of a terrace at roof level (to rear of building) and level access to the terrace. Alterations to the rear and mews facade; and alterations at lower ground floor associated with converting the car park to office floorspace. Associated internal alterations.

Installation of new plant equipment at roof level and extension/adaption of existing access walkways at roof level; installation of new extract grilles to external window serving ground floor WC; replacement of glazing in basement lightwell with fixed fly mesh panels and alterations in connection with the formation of new office space; and internal alterations.

Use of building as office (Class E) and associated external alterations including replacement of front door and installation of glass roof at rear first floor level. Internal works, including removal of partitions.

Installation of a condenser unit within a timber enclosure at rear first-floor roof level, associated pipework and refurbishment works to first-floor office spaces.