This spectacular Cantilevered Helical Staircase over 5 floors was commissioned by developers for an elegant period house that was totally re-constructed in the heart of St John�s Wood and will be one of the most outstanding properties to come on the market this year. The steel carriage was clad in fine white satin marble with a plastered soffit. The bespoke balustrade was specially designed, individually hand crafted and finished in a dark metallic bronze paint. The handrail was a flat oval section in American Walnut with an oiled finish.