TP Bennett has been appointed to carry out the £35 million overhaul of the National Audit Office's Art Deco headquarters in central London.
The financial watchdog wants to completely revamp its Grade II-listed 1930s office in Buckingham Palace Road - the former Imperial Airways Empire Terminal building designed by A Lakeman.
As well as 'rejuvenating the tired interior and life-expired services installation', the practice has been asked to oversee the 'strip out to structural shell', replace windows and carry out remedial works to the existing steel frame.
Included in the package will be the repair of the exterior stone cladding and the replacement of the roof coverings to create a 'modern sustainable building'.
Pevsner described the building, built between 1937-39, as Art Deco Baroque 'centred on a square-topped clock tower twice the height of five-storey wings'.
Originally designed as a terminal for passengers on their way to Croydon Airport and the seaplanes at Southampton, the building closed to travellers in 1980.by Richard Waite