Archer Architects has won planning permission to revamp of M&C Saatchi’s London headquarters in Soho. The scheme will refurbish a grade II listed building overlooking Golden Square while an unlisted extension will be replaced by a new five-storey structure housing office space and ground floor shops. The façade will be made from corten steel, ETFE cushions, glazed elements and incorporates photovoltaic panels. The scheme will create 7000 sq m of offices and work is expected to start later this year.