You'll find three words that sum up the Preston upholstery maker Tetrad: one of a kind, eccentric and British.  They don't seem to be keen on churning out sofas and chairs, but are constantly experimenting with something various, but, From time to time, they come up with a blinding winner: https://supremo-garden-furniture80112.vidublog.com/35838571/5-essential-elements-for-tetrad-sofas