Part demolition of the site for the refurbishment and extension to the existing facade facing onto Exchange square and upper levels, External alterations and improvements to facades facing onto Bishopsgate and at ground floor including new main entrance and new retail frontages, public realm improvements fronting Bishopsgate including new steps, seating and accessibility improvements, Increased height and widening of Exchange Arcade, creation of a new outdoor retail pavilion terrace for public use to level 1, creation of west extension terraces, creation of wing extension terraces, provision of external terraces for occupants at levels 4, 8, 9, 10, 11, 12 and roof terrace on level 13, provision of cycle storage and other works incidental to the development 9,920 sq.m.