We at Charles Grosvenor offer a made to measure staircase service. We also have a department dedicated to the matching of newel posts, hand rails & caps in any type of wood. (I think even us would struggle with the above). We also can supply a fit bespoke staircases and glass balustrades at very reasonable prices.
Call us on 01527 551870, or http://www.grosvenorstairs.co.