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.

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.