Erection of rear extensions at lower ground, ground and first floor levels; erection of railings on part of top of the proposed lower ground floor rear extension and replacement of trellises on side boundaries with close boarded fencing, in connection with the formation a roof terrace; installation of new French doors following the removal of existing window, to the rear elevation at ground floor level, to provide access to the proposed roof terrace; erection of a new enlarged dormer window following the removal of existing in the rear roofslope; lowering the lower ground floor level; demolition of existing external staircase and steps and formation of new steps with metal railings and handrails in the rear garden; associated landscaping of the rear garden.

Variation of condition 2 of planning permission ref: 2022/00949/FUL granted 13th July 2023 for the 'Erection of a part one/part two storey extension to the main building at roof level following removal of existing plant; plant enclosure at seventh floor level; three-storey tiered extension to the side and rear of the building at second, third and fourth floor levels; roof terraces at fifth and seventh floor levels; alterations to ground floor frontage and the first floor northern elevation; replacement windows; external alterations; provision of refuse storage at ground floor level and cycle storage at basement level, in connection with the provision of an additional 4,539sqm (GEA) of high grade Class E(g)(i) office space (16,301sqm (GEA) in total)' to allow amendments to the approved drawings to include: accommodate a larger substation within the existing building envelope on the ground floor; repositioning of doors and rooflights on the green roof of the second floor; repositioning of roof lights on the second, and fourth to seventh floor terraces/green roofs and roof level; brick detailing/infill added to part of east, north and south elevations; new louvre for basement smoke extract on south and north elevations; and reposition louvre on west elevation.

Replacement of existing dormer window with an enlarged dormer window in the rear roofslope following the demolition of existing roof extension; installation of 3no rooflights in the front roofslope; demolition of existing chimney stack at roof level.

Erection of 3no dormer windows to replace the existing windows in the front roofslope; erection of a rear extension at second floor level over part of the existing back addition; erection of a single storey rear extension, to the side and rear of the existing back addition; excavation of the front and rear garden to form lightwells in connection with the enlargement of the existing basement; installation of 15no solar panels and 1no rooflight at main roof level; installation of 3no solar panels and 1no rooflight above the roof of second floor rear back addition; infilling of 1no window and installation of a new window to the side of rear back addition at first floor level; alterations to the roof of ground floor back addition to include the installation of new rooflights; erection of external stairs at basement and ground floor levels to the rear of the property; erection of glass balustrade at ground floor level to the rear elevation; reinstatement of chequerboard tiled entrance.

Erection of front and rear roof extensions including the formation of a hip to gable roof extension, involving an increase in the ridge height to match no. 16 Edith Road; erection of an extension to the side of the main building and existing back addition at lower ground level to roof level; erection of a rear extension at third floor level, over part of the existing back addition; erection of an extension to the side and rear elevations of the existing back addition at lower ground level to second floor level; removal of existing windows to the side elevation of the existing back addition at first and second floor levels; provision of a roof terrace at upper ground floor level to the rear with privacy screen; formation of external rear garden steps at lower ground level; associated landscaping; erection of a single storey outbuilding in the rear garden.

Erection of a rear extension at second floor level, over part of the existing back addition; removal of the remaining pitched roof of the existing back addition at second floor level to form a roof terrace, enclosed with a 1.7 metre high obscured glazed screen; installation of bi-folding doors in the rear elevation of the proposed rear extension at second floor level to provide access to the proposed roof terrace; installation of 2no. rooflights in the front roofslope; and installation of a new window to the side gable elevation at first floor level.

Alterations to the roof of back addition to incorporate a flat roof and the erection of opaque glazed screens around the flat roof at third floor level to the rear elevation in connection with its use as a terrace; infilling of 1no window and installation of a new door to access the roof terrace at third floor level to the rear elevation.

Erection of a rear roof extension; installation of 3no. rooflights in the front roofslope; erection of 1.7m high obscure glazed screening to both sides of the flat roof of existing ground floor back addition, in connection with its use as a roof terrace; installation of a new door to replace an existing window to the rear elevation at first floor level, to provide access to the proposed roof terrace.

Erection of a rear extension at second floor level, over part of the existing back addition; installation of a new window following the removal of existing, to the rear elevation of existing rear roof extension.

Erection of a rear extension at second floor level, on top of the existing back addition to replace the existing roof terrace; replacement of the existing window with a new window in the rear roofslope; alterations to the roof of single storey back addition to include the replacement of existing rooflights with new sloped glazed openable rooflights; installation of a new window at lower ground floor level to the rear elevation.