Erection of two storey roof extension and alterations throughout to provide additional office (Class E) floorspace, refurbishment and alterations to existing elevations including replacement windows and associated works including the relocation of the entrance at ground floor level. Installation of roof plant, enclosure and lift overrun, provision of terraces at fifth and sixth floor levels, terrace at roof level and all associated and ancillary works.

External alterations including; the partial demolition of existing mansard roof and corner coping to accommodate a new and extended lift; installation of replacement windows at rear lower ground and ground floor level; installation of replacement entrance steps; installation of plant within lowered vault at lower ground floor level, installation of louvered vault doors; installation of a plant enclosure, photovoltaics and a living green roof at part main roof level; creation of terrace with access hatch and associated works at part main roof level for use in connection with the existing office accommodation (Class E).

Alterations and extensions, including the infilling of the front yard with a three storey extension with ground floor servicing bay, single storey extension over existing building, and lift and stair core to provide access to new roof terrace at third floor level; installation of PV panels on roof; installation of green roof; installation of mechanical plant equipment at rear first floor level; all in association with the extension to the existing community use and provision of a new co-working office space at second floor level (Use Class E)

Alterations and extensions to the existing sixth and seventh floors and creation of new 8th floor, both to provide additional office (Class E) floorspace, new terraces and fire escapes, creation of new deck over existing plant area, replacement plant, new windows to front and rear elevation, replacement pavement light, cycle storage and associated facilities, and other works incidental to the application proposals.

Variation of conditions 1 and 7 of planning permission dated 27 January 2023 (RN: 22/06543/FULL) for internal alterations and external alterations including part use of the basement for cycle storage and facilities, refurbishment of the existing windows and the introduction of slimline double-glazed units into the existing frames; partial window replacement on rear elevation; extension to rear mansard roofslope; replacement of roof level plant and installation of plant screens; infill of redundant lightwells to all office floors; façade refurbishment works; and improvements at basement level to provide end of trip facilities including shows and bike storage. NAMELY, for the introduction of a dry riser to the façade of 172 Piccadilly; replacement of windows and doors to the rear elevation; omission of terrace planting (Linked to 23/03115/LBC)

Infill extension of recessed bay at rear of the building across 1st to 3rd floors and erection of new roof terrace on fourth floor roof; erection of 5th storey roof terrace with associated sedum roof and balustrading; extension of existing roof extension to allow for new staircase access to roof and a servery for the roof terrace; erection of new plant enclosure on roof and rear ground floor lightwell to house new AC Condenser Units; alterations at ground floor level to improve access and enhance existing entrances; installation of new glazing at basement lightwell and at ground floor level; and installation of cycle parking and end of journey facilities; all to extend and alter building in office (Class E) use.

Dual/alternative use of the first floor East Unit for either continued residential (Class C3) or office (Class E) use and associated internal alterations at first floor.

Dual/alternative use of the first floor West Unit for either continued residential (Class C3) or office (Class E) use and associated internal alterations at first floor.

Partial demolition; infill of rear lightwells; front extension at fifth floor level and introduction of a terrace; partial replacement of front elevation; refurbishment of existing building; installation of plant equipment; replacement windows; cycle parking; and associated external alterations; in connection with the use of the building as Offices (Class E).

Variation of Condition 1 of planning permission dated 19th April 2023 (RN: 20/04541/FULL) for, 'Erection of an extension at the rear of 18-22 Wigmore Street at first to fourth floor levels and alterations to the rear roof form to allow conversion of the attic space to provide additional residential floorspace for the existing flats (Class C3), including the infilling of an internal lightwell adjacent to 16 Wigmore Street and the installation of a new lift. Alterations at basement and ground floor level including the infilling of a rear lightwell at basement and ground floor levels. Installation of plant within an associated enclosure at rear first floor level with a green roof over and screened plant on a flat roof at fourth floor level to the rear of 22 Wigmore Street. Alterations to the front of the building including new windows, shopfronts and metal railings at ground floor level. All in connection with the dual / alternative use of the basement, ground and first floors as either office (B1) / retail (A1) or a sui generis use comprising piano showroom, office space, new recital room, piano practice rooms and workshop space and use of the second to new fifth floors as 8 residential units comprising 3 x 1 bed; 4 x 2 bed and 1 x 3 bed' (SITE INCLUDES 18, 20 AND 22 WIGMORE STREET); NAMELY to install additional plant at rear first floor level and amend the approved enclosure, decorative cladding and green wall. (Application under Section 73 of the Act).