New lead coverings were laid on the projecting cornices and ledges, which also became the concealed location for compact LED fittings as part of the new external lighting. Lead rainwater goods were overhauled, along with the lightning conductors, and the building’s parapet gutters and sump outlets were renewed in lead, to modified configuration.
Blast-resistant secondary glazing was exhaustively researched and fitted internally to the principal windows.

The first phase, run as a Construction Management Contract under Gardiner & Theobald, was concluded by the installation of a fire-suppression ‘misting’ system in the roofspace above the great Rubens/Inigo James ceiling, and the fixing of new horizontal flagpoles over Whitehall, with flags designed to honor both artists.