Below are the details from their Flyer, Never used them but the discount seems to be good.
• 40% off Making and Lining on Custom Lined Fabrics in the Designers Collection range
• 30% off Custom Making and Lining on the Bespoke range
• 35% off Custom Blinds
• 40% off full priced Studio range of readymades and accessories (available in-store and online)