Repairs and minor alterations to the existing windows and window framing at first, second and third floor levels of Crescent House, including: stripping, repairing and redecorating existing window frames; replacement of existing single-glazing with vacuum glazing panels; insulation works to the main concrete vaulted roof and first floor concrete soffit; and associated works.

Repairs and minor alterations to the existing windows and window framing at first, second and third floor levels of Crescent House, including: stripping, repairing and redecorating existing window frames; replacement of existing single-glazing with vacuum glazing panels; insulation works to the main concrete vaulted roof and first floor concrete soffit; and associated works.

External alterations at seventh floor roof level comprising: (i) lowering of sills of two windows in western facade of Thames House to create door openings providing access from adjoining lift core and means of escape to stair core; (ii) consolidation of existing plant behind new 1800mm plant enclosure; (iii) creation of new rooftop amenity terrace incorporating new seating, planting and 1100mm balustrades; (iv) creation of means of escape across roof with new stair to the sixth floor terrace; and (v) removal of existing balustrade and existing BMU track; and associated works.