Refurbishment of the existing building for continued office use including the reconstruction of the rear ground extension; new rear terrace; rationalisation of plant equipment; replacement of windows; internal alterations; upgrades to services, fabric repairs and altered decorations; and conversion of the third and fourth floors to ancillary accommodation for The Mercers' Company (as per 15/01308/FULL and 15/01309/LBC).

External and internal refurbishment to include works to Grace Hall, remodelling the internal entrance lobby, remodelling the lower ground floor to include provision of cycle storage and cycle facilities (showers/lockers) , renovation of office floors 1-4, creation of new access to an existing terrace at 4th floor level, demolition of existing plant enclosure and installation of new plant within a plant enclosure at roof level. Conversion of mezzanine dining area to ancillary office use involving a change of use from events venue use (sui generis) to ancillary office use (Class E). External facade cleaning and redecoration of all internal spaces.

Conversion of part of the ground floor to two flats, retention of the existing estate office at part ground floor level, installation of replacement windows at ground floor to match existing, and the provision of a new disabled parking space.