This is the gorgeous Tangalle fabric by the Designers Guild, available in two colorways: Dune and Walnut

Its official description is: "Wonderfully soft with fantastic drape, this slubbed weave has a subtle tonal effect and creates elegant curtains, blinds and cushions alike. Taking inspiration from hand-woven textiles but created using state-of-the-art manufacturing techniques."

83% Polyester 17% Viscose

The Dune (beige) remnant measures 128cmL x 140cmW
The Walnut (grey/brown) remnant measures 102cmL x 140cmW

The Tangalle reference belongs to the "Kumana" fabric collection: "Woven with unique space-dyed yarns, this elegant duo of weaves is inspired by hand-woven textiles. Kumana emulates the feel of hand-woven silk with the practicality of modern fibres in 26 stylish colourways. Tangalle is wonderfully soft with fantastic drape, woven with a stylish slubbed effect. Machine washable and suitable for curtains, cushions and blinds."

Retails £40/m