They primarily lay dark fibre which means not much for the likes of you and me as consumers of broadband who need to purchase a product from an ISP.
I notice they have recently partnered with Easynet for supply of PSN. (Eg government networks) again that discludes consumers and small business. Easynet provide backhaul for some ISPs. They used to own ukonline the ISP, but sold that off to sky.
Im afraid I don't see them rolling out fibre to remote regions and retailing broadband to residential consumers.