The Gaslight Building, 29 – 35 Rathbone Street, London. – Developer: I.S.A Holdings – Interior architecture and design: bureau de change design office – Architects: dMFK Architects – Laser-cut PVD coloured stainless steel in custom Bronze for stairs, lift core and architectural detailing by Double Stone Steel in partnership with John Desmond Ltd. Showing the lift fascia, doors and stairs rising through the core – Photography by Gilbert McCarragher