Erection of three storey rear extension and inverted dormer to top floor at rear to create roof terrace with frameless glass balustrade. Internal alterations to room layouts, creation of office and storage space under pavement vaults, revised rear fenestration with new side windows and addition of lightwell.

Erection of two storey rear extension and inverted dormer to top floor at rear to create roof terrace with frameless glass balustrade. Internal alterations to room layouts, replacement of existing stair case from second to fourth floors and creation of office and storage space under pavement vaults, revised rear fenestration with new side windows, addition of lightwell.

Erection of three storey rear extension and inverted dormer to top floor at rear to create roof terrace with frameless glass balustrade. Internal alterations to room layouts, replacement of existing stair case from second to fourth floors and creation of office and storage space under pavement vaults, revised rear fenestration with new side windows, addition of lightwell.

Formation of additional level to create office space (B1) incorporating replacement roof plant, reinstatement of chimney, balustrade terrace to West elevation, installation of solar panels and associated works.