Premium Silk Satin Supplier Sourcing – UK Luxury Brand

I am the owner of a UK-based luxury nightwear and loungewear brand and am looking to source a new supplier of premium-quality silk satin.
I have used Bennett Silks for many years and have been very happy with the quality; however, the cost per metre has become quite high. I am therefore interested in exploring alternative suppliers who can offer a comparable luxury quality at a more competitive price.
Quality is extremely important, as the silk is used for premium nightwear, lingerie and accessories, so I am not looking for cheaper synthetic satin alternatives.
If you have experience sourcing high-quality silk, contacts with reputable mills/wholesalers, or knowledge of suitable UK or international suppliers, I would be very interested to hear from you.
Thank you!