This is a gorgeous chenille fabric by William Yeoward for Designers Guild.
It comes in the "Steel" colorway and this particular piece measures 95cmL x 141cmW
Its official description is: "A collection of thirteen chenille fabrics in well considered colours. Each colourway is specially woven with multiple yarns to give wonderful texture and depth. Perfect for versatile upholstery."
42% Polyester 24% Polypropylene, 20% Cotton 14% Viscose
This Sancha reference belongs to the Library III collection: "William says “Plainer fabrics play a vital role in any interior and of course it is essential that they are interesting! I am thrilled to have found a truly beautiful dense pile velvet in Dennise; Sancha is a fascinating blend of texture and colour created by the many different yarn colours that combine harmoniously in every colour way, Finally I have re-introduced our favourite colours of Seborga for good measure.” Timeless and totally versatile, this collection is perfect for curtains, blinds, cushions, bedcovers and upholstery."