The 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, internal alteration to mezzanine and new external staircase for basement access for commuters.

Refurbishment and extension of the building to create additional floorspace with roof terrace for Class E use; erection of a pavilion structure at roof level; installation of new terrace areas with associated landscaping and balustrades; extension of existing plant enclosure; installation of plant equipment and kitchen extract duct; alterations to facade, including works to clock face on Fleet Street, and at ground floor level; alterations and extension to existing windows and vitrines; internal alterations to the ground floor lobby and interiors, and internal works to sixth floor heritage rooms; reinstatement of carriageway connections; provision of new ancillary facilities and other associated works.

(i) Temporary removal and storage of existing windows and secondary glazing; (ii) temporary removal and storage of external level 5 balustrade; (iii) removal of asbestos panels behind window boxes; and (iv) erection of scaffolding and ties to the building.

Internal and external alterations, including: (i) creation of terrace area at third floor level and associated access door; (ii) replacement of existing balustrade and fire staircase on third floor terrace fire escape route; (iii) installation of new windows and green wall within the rear lightwell; (iv) installation of replacement timber framed windows and replacement fire escape door at fifth floor level; (v) reconstruction of the main entrance steps; (vi) installation of replacement glazed timber entrance doors; (vii) erection of a platform lift and associated alterations to the forecourt, including soft landscaping; (viii) reconfiguration of internal layouts of the building from lower ground to fifth floor levels; and (ix) associated external refurbishment works.

External and internal alterations of the building including: (i) fabric removal and refurbishment works on all floors; (ii) replacement of all windows; (iii) installation of two additional lift shafts and lifts; (iv) extension of floor slabs into service risers; (v) removal of half landing toilet floors; (vi) reconfiguration of main entrance and foyer including new sesame lift, new doorways in internal wall, platform lifts to ground floor level and installation of new sesame lift at riverside level; (vii) alterations to eastern lightwell including extension into service riser with new windows and refurbishment of external fire escape stairs/lift; (viii) replacement of plant including rooftop plant rooms, lowering of south eastern corner rooftop wall and erection of roof top lobby with associated landscaped amenity terrace; (ix); and internal alterations to level -2 to create new cycle parking, changing facilities and waste storage facilities.